patio screen door replacement

Product Details

The Q15 Heavy Large Sliding Door is DERCHI's solution for projects that require a substantial, high-performance patio screen door replacement rather than a lightweight aftermarket fix. Unlike standard screen door replacement kits that only address the mesh component, the Q15 replaces the entire door system — frame, panels, glass, hardware, and screen — ensuring that thermal performance, weather sealing, and structural stability are addressed holistically. This makes it particularly relevant for renovation projects where the original patio door has deteriorated beyond simple repair, or for new constructions where large openings demand a door that can span wide and tall without compromising on insulation or security.

At the core of this product is its 6063-T5 thermal break aluminum profile with a 2.2mm wall thickness. The thermal break technology interrupts the conductive path through the aluminum, which is critical for maintaining interior temperatures in both hot and cold climates. Combined with the standard 8mm+21A+8mm insulated glass unit, the system achieves a verified 0.28 U-Factor rating. For B2B buyers evaluating this product, the U-Factor provides a directly comparable metric against other glazing systems and is a key input for building energy modeling and compliance documentation.

The structural and weather performance of the Q15 is quantified across four additional metrics: 4.5 kPa wind pressure resistance, 450 Pa water tightness, 4.5 m³/(m·h) air tightness, and 35 dB sound insulation. These figures give architects and engineers specific data points for project specification and code compliance verification. The door also features an embedded micro-gap track design, hidden drainage system, and brand-customized double-row quiet rollers, all of which contribute to smoother operation and longer service life in high-traffic installations. Buyers should confirm with DERCHI whether these performance values apply to their specific configuration, glass choice, and panel size, as larger panels may affect certain metrics.

Product Features

• Embedded Micro-gap Track Design: The track system features an embedded micro-gap construction that minimizes the clearance between the panel and the track surface. This design approach reduces dust accumulation, improves sliding smoothness, and contributes to better air tightness by limiting the pathways through which air can infiltrate. For B2B buyers, this feature translates to lower long-term maintenance requirements and more consistent weather performance over the door's service life. Procurement teams should confirm the track configuration (two-track or three-track) needed for their project layout and verify compatibility with the intended panel count.

• Frame-and-Panel Structure: The Q15 utilizes a frame-and-panel construction method that separates the structural frame from the movable panels, distributing loads more evenly and enhancing overall stability. This is particularly important for large-format sliding doors where panel weight and wind loads place significant stress on the frame. For contractors and architects, this structural approach simplifies installation planning because the frame can be positioned and secured before panels are lifted into place. Buyers should confirm the frame dimensions — the two-track wall thickness is 150mm and the three-track is 234mm — against their wall opening depth during the specification phase.

• High Quality Siliconized Felt Sealing Strip: Siliconized felt sealing strips are used throughout the door system to create compression seals between panels and between panels and the frame. Unlike rigid rubber gaskets that can harden and crack over time, siliconized felt maintains flexibility through temperature cycles, which helps sustain consistent air and water tightness performance across seasons. For distributors selling into climates with extreme temperature swings, this sealing approach may reduce warranty claims related to weather infiltration. Buyers should confirm the expected service life of the sealing strips and whether replacement strips are available as spare parts.

• Hidden Drainage Design: Water that penetrates the outer seal is managed through a hidden drainage system that channels runoff away from the interior without exposing drainage channels on the visible face of the frame. This preserves the minimalist aesthetic of the door while ensuring that water from wind-driven rain is evacuated effectively. The 450 Pa water tightness rating validates the effectiveness of this combined sealing and drainage approach. For projects in high-rainfall regions, buyers should discuss site-specific water exposure conditions with DERCHI to confirm that the standard configuration meets local building code requirements.

• Brand-Customized Double-Row Quiet Rollers: The sliding mechanism relies on brand-customized double-row quiet rollers that distribute the panel weight across two contact lines on the track. This dual-row design reduces point loading on the track surface, which can extend roller life and maintain smooth operation even with heavy insulated glass panels. The quiet operation aspect is particularly relevant for hotel and residential applications where guest or occupant comfort is a priority. Buyers should confirm the maximum panel weight capacity with DERCHI, as this information is not included in the standard specification sheet and is critical for projects using triple-glazed or laminated glass configurations.

• Anti-Sway Positioning Wheel Design: An anti-sway positioning wheel is integrated to stabilize the door panel and prevent lateral movement during operation or when subjected to wind pressure. For tall panels in high-rise or exposed installations, lateral sway can cause operational issues, seal compromise, and increased wear on rollers and tracks. The positioning wheel counters this by maintaining panel alignment within the track channel. Engineers specifying this door for wind-exposed projects should confirm with DERCHI how the anti-sway system performs at the maximum 4.5 kPa wind pressure rating and whether additional reinforcement is available for extreme conditions.

• Branded Hook Locks: Security is addressed through branded hook locks that engage the frame with a hook-style deadbolt mechanism, which is more resistant to prying than standard latch systems. The hook lock design pulls the panel tight against the frame seal when locked, simultaneously improving security and weather performance. For commercial projects where insurance requirements specify certain lock grades, buyers should request detailed lock specifications and test certifications from DERCHI to verify compliance with local security standards.

Customizable Styles

• Glass Options: The Q15 offers six glass categories: automotive grade tempered, double or triple tempered, laminated, Low-E, reflective, and tinted. The standard configuration is 8mm+21A+8mm double tempered, but buyers can select Low-E glass for enhanced thermal performance in extreme climates, laminated glass for additional security and safety glazing compliance, or tinted and reflective glass for solar control and privacy. Each glass choice affects the overall U-Factor, sound insulation, and panel weight, so buyers should request thermal and acoustic calculations for their specific glass selection. The glass panel thickness is 50mm with a 48mm panel width, which provides the structural depth necessary for multiple glazing configurations.

• Frame Options: The frame is constructed from 6063-T5 thermal break aluminum profile with a 2.2mm wall thickness. While the material is standardized, the frame face width is 43mm, and buyers can choose between two-track (150mm wall thickness) and three-track (234mm wall thickness) configurations depending on the number of panels and the wall depth available on site. For projects where wall depth is limited, the two-track option with one fixed and one active panel may be more appropriate. Buyers should confirm wall depth and structural opening dimensions before finalizing the track configuration.

• Size Options: Width ranges from 1300mm to 4000mm and height from 2000mm to 6000mm, accommodating both standard residential patio openings and oversized architectural installations. Available configurations include two-track two panels, one fixed one active, two-track four panels, two fixed two active, three-track three panels, and corner options. This range of configurations allows architects to design wide uninterrupted views or segment openings as needed. Buyers should provide exact opening dimensions and desired panel layout when requesting a quote, as custom sizes beyond standard ranges may be subject to additional lead time and engineering review.

• Color/Finish Options: Surface treatments include powder coating, anodized, wooden grain transfer, and PVDF coating, all available in customized colors. Powder coating is the most common choice for its durability and color range, while anodized finishes provide a metallic aesthetic that resists fading. Wooden grain finishes allow the aluminum door to coordinate with interior wood elements, and PVDF coating offers enhanced UV and weather resistance for exterior-facing installations in harsh climates. Buyers should request color samples and confirm that the selected finish meets any applicable AAMA or equivalent weathering standards for their market.

• Track or Opening Configuration: The Q15 supports push-and-pull sliding operation with manual or electric upper track options. The manual upper track face is 60mm, while the electric upper track face is 140mm, providing the necessary housing for motorized operation if project specifications require automated sliding. The lower track face is 59mm. Corner configurations are also available for projects requiring the door to navigate a building corner without a supporting mullion. Buyers considering motorized operation should confirm power requirements, control system compatibility, and whether DERCHI supplies the motor and control hardware or if third-party integration is needed.

• Project Customization: For large-scale projects, DERCHI may offer project-specific customization that can include custom profile dimensions, unique hardware finishes, branded packaging, and coordinated delivery scheduling. Distributors seeking private-label options should discuss OEM or ODM availability directly with DERCHI, as this capability is not confirmed in the standard product documentation. Architects working on signature projects should engage DERCHI's technical team early in the design phase to confirm what customization is feasible within the project timeline and budget parameters.

Hardware Accessories

• Handle: Handle options are available from GU Brand, selected German brands, and Chinese top-brand hardware manufacturers. The choice of handle affects both the tactile experience of operating the door and the visual aesthetic of the interior and exterior faces. For high-end residential and hospitality projects, German-brand handles are often specified to meet designer and client expectations for feel and finish. Buyers should confirm the exact handle model, finish, and projection dimensions with DERCHI, as these details are necessary for clash detection with window treatments and for accessibility compliance in commercial projects.

• Rollers: The Q15 is equipped with brand-customized double-row quiet rollers designed to support the weight of heavy insulated glass panels while maintaining smooth, low-noise operation. The double-row design distributes load across two contact points, reducing wear concentration and extending service intervals. For projects in environments with high foot traffic or where quiet operation is a specified requirement — such as hotel guest room balconies — the quiet roller specification is a meaningful differentiator. Buyers should confirm the maximum rated load per roller set and the expected service life under projected usage cycles, as this information is not detailed in the standard specification sheet.

• Buffer/Soft-Close System: Information about a standard soft-close or buffer system is not explicitly detailed in the product specification. Buyers who require soft-close functionality to prevent panel slam and reduce wear should confirm with DERCHI whether this feature is included, available as an option, or compatible with third-party soft-close hardware. In commercial and hospitality settings, soft-close mechanisms are often specified to improve user experience and reduce maintenance caused by hard impacts over time.

• Lock: Branded hook locks provide the primary security mechanism for the Q15. The hook-style engagement pulls the panel firmly against the frame, compressing the weather seals while creating a secure anchoring point that resists forced entry attempts through prying. The hook width is 28mm, which buyers should note when evaluating lock reinforcement requirements in the frame. For projects requiring specific lock grades or keyed-alike systems across multiple units, buyers should discuss master keying, cylinder options, and lock compliance certifications with DERCHI before placing an order.

• Track System: The track system includes an upper track and lower track that guide the panels during sliding operation. The embedded micro-gap track design minimizes the gap between panel and track, improving both aesthetics and weather performance. The lower track face is 59mm, the manual upper track face is 60mm, and the electric upper track face is 140mm. Proper track installation is critical for long-term performance, and buyers should confirm whether DERCHI provides installation guidelines, track reinforcement recommendations for heavy panels, and whether track accessories such as end caps and joiners are included with the door assembly.

• Sealing/Connection Hardware: High-quality siliconized felt sealing strips provide the primary weather seal between moving and stationary components. These strips maintain flexibility across temperature ranges, which helps sustain the door's air tightness and water tightness ratings over time. At the panel connections, the anti-sway positioning wheel serves as both a stabilizing device and a secondary alignment mechanism. Buyers should confirm whether spare sealing strips and positioning wheel components are available for future maintenance, and whether DERCHI offers a recommended maintenance schedule for seal inspection and replacement.

Basic Parameters

Product Specifications

Advantages

• Brand Strength: DERCHI brings over 15 years of experience in aluminum window and door manufacturing, supported by a network of over 700 distributors serving customers in more than 100 countries. This established presence provides B2B buyers with confidence that the company has the infrastructure and market validation to support both large-scale orders and ongoing after-sales service. The company also holds over 100 national patents covering inventions, designs, and appearances, which indicates a sustained investment in product development rather than a reliance on commodity designs. For distributors evaluating long-term supplier partnerships, DERCHI's track record and patent portfolio are indicators of organizational stability and innovation capacity.

• Factory Capability: The manufacturing facility spans 70,000 m² with a 4,000 m² showroom, and the workforce exceeds 600 employees. This scale allows DERCHI to manage both large-volume production runs and custom project fabrication within the same facility. The on-site showroom enables visiting buyers to inspect product quality, test hardware operation, and review finish samples before committing to an order. For B2B buyers considering a factory audit, the facility's size and organizational structure support comprehensive quality management processes, which is corroborated by the ISO9001 certification.

• Production Capacity: DERCHI reports an annual output exceeding 400,000 units. This production capacity is relevant for developers and contractors working on multi-building projects or phased developments who need assurance that the supplier can deliver consistent volumes on schedule. However, actual lead times and production slot availability depend on order specifics, customization level, and current factory loading. Buyers with time-sensitive projects should confirm production scheduling and delivery timelines with DERCHI at the quotation stage rather than assuming immediate availability.

• Certifications: The Q15 holds certifications including NFRC (product-level), AS2047 (market-specific for Australia), CE (market-specific for Europe), and CSA (market-specific for North America), with ISO9001 at the factory level. These certifications cover key international markets and provide a starting point for building code compliance in multiple regions. Buyers should confirm whether the required certification documents apply to the selected product configuration and target market, as certification scope can vary by glass type, size, and hardware combination. Specific test report numbers and certificate IDs should be requested from DERCHI for independent verification.

• Service Capability: DERCHI offers online technical support along with return and replacement after-sales service. A dedicated R&D team of over 20 professionals supports continuous product development and can assist with project-specific engineering questions. The one-stop service model covers the process from order placement through delivery, which reduces the coordination burden on procurement teams managing multiple suppliers. Buyers with complex project requirements should discuss the scope of technical support available during the installation phase, including whether DERCHI provides on-site supervision or remote troubleshooting assistance.

• Customization Capability: The Q15 platform supports customization across glass type, size, color/finish, track configuration, and panel layout. Corner configurations and motorized operation options further expand the design possibilities. This flexibility allows architects and developers to specify a single door platform across multiple project areas — from standard patio openings to oversized corner installations — while maintaining consistent aesthetic and performance characteristics. OEM or ODM customization may be available for distributors seeking private-label products; however, this capability should be confirmed directly with DERCHI as it is not explicitly documented in the standard product information.

• B2B Support: DERCHI's B2B infrastructure includes support for architects, contractors, distributors, and property developers across project types including villas, hotels, offices, residential buildings, and commercial spaces. The combination of quantifiable performance data, multiple certification paths, and configurable product options positions the Q15 as a specification-friendly product that can be documented in architectural schedules and tender submissions. For large projects, early engagement with DERCHI's technical team is recommended to confirm configuration details, obtain project-specific performance calculations, and align delivery schedules with construction milestones.

Application Scenarios

• Apartment: In multi-unit residential buildings, balcony and patio doors face repeated daily use and exposure to weather from exterior-facing openings. The Q15 addresses the common pain points of apartment balcony doors — poor thermal sealing, operational noise, and water ingress during storms — with its 35 dB sound insulation, quiet double-row rollers, and 450 Pa water tightness rating. Property developers specifying the Q15 across an entire apartment complex benefit from consistent product performance and a single supplier relationship for warranty and maintenance support. Buyers should confirm the building's wind load requirements and whether the standard 4.5 kPa rating meets local building code for the building's height and exposure category before ordering.

• Home Office: Home offices attached to patios or gardens require a door that provides natural light and visual connectivity to the outdoors while maintaining acoustic separation for concentration during work hours. The Q15's 35 dB sound insulation helps reduce traffic and neighborhood noise, while the thermal break aluminum frame prevents temperature fluctuations near the door that can create discomfort at a desk positioned nearby. The nylon screen option allows ventilation without insects during warmer months. Buyers configuring a home office installation should consider Low-E glass to further reduce solar heat gain on the work area side of the door.

• Hotel: Hotel guest room balconies demand doors that operate quietly, seal reliably against weather, and present a refined aesthetic that matches interior design standards. The Q15's quiet rollers minimize disturbance to neighboring rooms, the branded hook locks provide guest security, and the minimalist frame design with hidden drainage maintains clean sightlines from both interior and exterior perspectives. For hotel procurement teams, the availability of multiple color and finish options allows the door to be coordinated with room design packages. Buyers should request hardware finish samples and confirm lock cylinder keying systems compatible with hotel master key setups.

• Office Building: Commercial office spaces that open onto terraces, courtyards, or balconies need doors that accommodate high traffic while maintaining interior climate control. The Q15's 0.28 U-Factor contributes to the building's overall energy performance, which is increasingly important for green building certifications and tenant comfort. The push-and-pull operation is intuitive for building users, and the robust frame-and-panel structure withstands the wear of frequent use. Buyers specifying the Q15 for office applications should confirm accessibility requirements — including door opening force and maneuvering clearance — and verify compliance with applicable commercial building codes.

• Outdoor: For outdoor-facing installations such as pool enclosures, covered terraces, or garden pavilions, the door must withstand direct exposure to rain, wind, and temperature extremes. The Q15's 450 Pa water tightness and 4.5 kPa wind pressure resistance provide verified performance thresholds for these conditions. For outdoor or exterior-related projects, buyers should confirm weather resistance, water tightness, wind pressure requirements, surface finish durability, and installation conditions before ordering. The PVDF coating option may be appropriate for outdoor applications where UV resistance is a concern, and buyers should discuss finish warranty terms for exposed installations.

• Residential Building: In general residential construction, patio and balcony doors are a primary interface between indoor living space and the exterior environment. The Q15 serves as a comprehensive patio screen door replacement that upgrades both thermal and weather performance compared to older sliding door systems. The integrated nylon screen allows homeowners to enjoy natural ventilation, while the thermal break aluminum frame and insulated glass reduce energy costs throughout the year. For residential developers, the more than 5-year warranty provides a degree of post-handover assurance. Buyers should confirm the specific warranty terms, coverage scope, and claim procedures with DERCHI.

• Exterior: Exterior-facing doors in any building type are the first line of defense against the elements and represent a significant portion of the building envelope's thermal and moisture performance. The Q15's combination of thermal break technology, siliconized felt seals, and hidden drainage addresses the primary failure modes of exterior sliding doors: thermal bridging, air infiltration, and water penetration. For exterior applications, the choice of glass type is particularly important — Low-E glass improves thermal performance, while laminated glass adds a safety layer for elevated installations. For outdoor or exterior-related projects, buyers should confirm weather resistance, water tightness, wind pressure requirements, surface finish, and installation conditions before ordering.

• Villa: Villa projects frequently feature oversized patio openings that blur the boundary between indoor and outdoor living areas. The Q15's maximum dimensions of 4000mm wide by 6000mm tall accommodate these expansive openings, and the corner configuration option allows for dramatic architectural transitions without visible mullions. The minimalist 43mm frame face width maximizes glass area, which is a key aesthetic requirement for luxury residential projects. For villa specifications, buyers should confirm the maximum panel weight capacity — particularly when specifying triple-glazed or laminated glass for enhanced acoustic or security performance — and discuss motorized operation options for panels that may be too heavy for convenient manual operation.

What to Confirm Before Ordering

• Minimum Order Quantity: Confirm the MOQ with DERCHI, as this information is not included in the standard product documentation and is essential for determining order feasibility and budget.

• Pricing and Payment Terms: Request project-specific pricing, as costs vary with glass type, size, hardware selection, and finish. Confirm payment terms and currency options.

• Lead Time and Production Schedule: Verify production and delivery timelines against your project schedule, particularly for large or customized orders that may require extended lead times.

• Certification Applicability: Confirm that NFRC, AS2047, CE, and CSA certifications apply to your selected configuration and target market. Request specific test report numbers for independent verification.

• Hardware Specifications: Obtain exact hardware brand, model, and finish details for structural planning and aesthetic coordination.

• Maximum Panel Weight: Confirm the weight capacity per panel, especially when specifying laminated or triple-glazed glass for enhanced performance.

• OEM/ODM Availability: Discuss private-label requirements with DERCHI if applicable, including minimum quantities, lead time impact, and any setup costs.

B2B Project Support

DERCHI provides comprehensive B2B project support tailored for architects, contractors, distributors, and property developers. A dedicated R&D team of over 20 professionals can assist with project-specific engineering questions, performance calculations, and configuration optimization. The one-stop service model covers the process from initial consultation through order management and delivery coordination. For large-scale projects, DERCHI can provide project-specific documentation including performance certificates, glass compliance documentation, and installation guidelines. Distributors benefit from DERCHI's established global network of over 700 partners across 100+ countries, which provides local market knowledge and logistics support. Early engagement with the DERCHI technical team is recommended for complex projects to ensure that all specification, certification, and scheduling requirements are addressed before production begins.

Installation and Maintenance Notes

Proper installation is critical to achieving the performance ratings specified for the Q15. The door's weather resistance, air tightness, and water tightness ratings assume correct installation in accordance with DERCHI's recommended procedures. Buyers should confirm that installers are experienced with thermal break aluminum sliding door systems and understand the specific requirements of the Q15's embedded micro-gap track and hidden drainage system. The siliconized felt sealing strips should be inspected periodically for compression set or damage, and replacement strips should be available through DERCHI's after-sales service. The double-row quiet rollers and anti-sway positioning wheels should be checked for smooth operation during regular maintenance intervals. For motorized configurations, follow the motor manufacturer's maintenance recommendations. Detailed installatio