Unclear system selection
Match frame depth, drainage, operation, glazing and hardware to the opening and environment.

Factory-direct systems for project orders
Custom casement windows, sliding systems and aluminum doors for residential, commercial and wholesale projects.



*Coverage depends on the selected product, component, normal-use conditions and contract terms. Confirm the applicable warranty with the project team.

Built around the buying decision
The difficult part is rarely finding a window shape. It is coordinating the product, performance, documentation, finish, hardware, quantities and logistics without losing control of the project brief.

Match frame depth, drainage, operation, glazing and hardware to the opening and environment.
Connect the selected series with drawings, configuration details, test information and destination requirements.
Coordinate casement windows, fixed glazing, sliding, folding and swing systems under one finish and schedule.
A useful quotation depends on dimensions, configurations, quantities, glass, hardware, destination and scope.
Aluminum window and door systems
Start with the operation your project needs, then confirm the series, configuration and performance documentation. Aluminum casement windows are the featured window category, supported by sliding, picture, folding and swing systems.

Outward-opening and awning configurations for ventilation, weather control, clean sightlines and project-specific glass or hardware.

Space-efficient operation for residential and project applications, with multi-track configurations available in selected systems.

Fixed window units for daylight, views and coordinated elevations, often combined with operable windows in the same project.

Multi-panel folding systems for patios, hospitality spaces and large openings where a broad connection between interior and exterior is required.

Two-, three- and four-track options are available in selected series for expansive openings, large glazed panels and level-threshold planning.

Single, double and unequal-leaf configurations for interior or project applications that require a hinged aluminum door system.

Featured category
Casement windows combine controlled ventilation with a compression-sealed operation. DERCHI's catalogue includes outward-opening and awning configurations across multiple frame depths. The correct series depends on the opening, glazing and performance brief.
Selected systems use insulated aluminum profiles and series-specific frame widths.
The catalogue lists double-tempered, argon-filled insulating glass configurations for featured series.
EPDM sealing and multi-point locking configurations vary by model and should be confirmed before specification.
Representative system data
These values come from the supplied DERCHI product catalogue. They are included to support early comparison—not to imply that one result applies to every size, glass build-up, configuration or destination.
Specification note: Confirm the selected model, dimensions, configuration, glazing and matching test documentation with the project team before design approval or purchase.
| Series | Water tightness | Air tightness | Wind pressure | Sound insulation | U-Factor (U.S./1-P) | SHGC | Catalog configuration highlights |
|---|---|---|---|---|---|---|---|
| WY-104 Casement window | 700 Pa | 1.2 m³/(m·h) | 5 kPa | 35 dB | 0.23 | 0.20 | 5 mm + 27A + 5 mm glass; 1.8 mm profile; 104 mm frame; outward opening / awning |
| WY-118 Casement window | 700 Pa | 1.2 m³/(m·h) | 5 kPa | 35 dB | 0.23 | 0.20 | 5 mm + 27A + 5 mm glass; 1.8 mm profile; 118 mm frame; outward opening / awning |
| WT-95 Thermal-break sliding window | 450 Pa | 4.5 m³/(m·h) | 5 kPa | 30 dB | 0.32 | 0.25 | 5 mm + 12A + 5 mm glass; 1.8 mm profile; four-track 95 mm / five-track 133 mm |
| WT-150 Heavy sliding door | 450 Pa | 4.5 m³/(m·h) | 4.5 kPa | 35 dB | 0.28 | 0.20 | 6 mm + 25A + 6 mm glass; 2.0 mm frame / 3.0 mm leaf; two-, three- or four-track |
| WP-103 Interior swing door | 450 Pa | 4.5 m³/(m·h) | 5 kPa | 30 dB | 0.28 | 0.20 | 5 mm + 27A + 5 mm glass; 2.0 mm profile; 103 mm frame; single, double or unequal-leaf |
| WZ-80 Folding door | 350 Pa | 1.8 m³/(m·h) | 4.5 kPa | 35 dB | 0.38 | 0.22 | 5 mm + 20A + 5 mm glass; 2.0 mm profile; 80 mm frame; folding operation |
Casement window
Casement window
Thermal-break sliding window
Heavy sliding door
Interior swing door
Folding door
Source: DERCHI 2026 product catalogue, product pages 018, 021, 032, 043, 048 and 050. Open the complete catalogue
Customization and OEM support
Share the opening schedule, drawings or early requirements. The review can then connect product type, size, operation, finish, glazing, hardware and packaging with the intended use and destination.
Review opening sizes, panel divisions, handing, tracks, fixed/operable combinations and project tolerances.
Align glass build-ups and the selected series with thermal, solar, acoustic, wind, air and water requirements.
Coordinate frame color, surface finish, handles, hinges, locks, rollers and other system-dependent hardware.
Confirm project references, package requirements, shipping destination and the handoff information needed by the buyer.
Who we work with
The product range is shared, but the decision path changes by buyer. Use the relevant resource below, or stay on this page for a manufacturer-level overview.

Review range fit, customization, documentation, packaging, repeat-order needs and market support.
Become a DERCHI partner
Connect design intent with system selection, opening types, interfaces, drawings and relevant technical documentation.
Solutions for architects
Coordinate schedules, quantities, drawings, packaging and project information across residential or commercial scopes.
Solutions for builders
Compare styles and operations, then organize whole-house or replacement requirements into a practical project brief.
Guidance for homeownersWatch the systems
These videos are embedded from the official DERCHI YouTube channel. They provide visual context for factory capability, product operation, production quality and project-ready aluminum window and door systems.
A visual introduction to DERCHI aluminum windows and doors.
See the featured aluminum casement window category and its slim-frame presentation.
View a double-glazed folding door configuration for wide-opening applications.
See the manufacturing environment behind custom aluminum windows and doors.
A visual overview for buyers comparing a long-term window and door manufacturing partner.
Review the production context that supports project documentation and shipment planning.
Factory and quality control
Project confidence comes from more than a product image. The manufacturing review should cover the confirmed configuration, production controls, functional checks, documentation and shipment preparation.


The supplied product catalogue states that products receive 100% full inspection before shipment. Inspection criteria still need to follow the approved product, configuration and order scope.

Documentation by product and market
The official catalogue presents authorization certificates, conformity documents or test reports referencing the following programs and standards. Their presence in the catalogue does not mean every document applies to every product or destination.
Built-project references
Project photographs help buyers evaluate scale, sightlines, color and opening configurations. Use them as visual references, then confirm the product series and requirements for your own project.






From inquiry to delivery
The exact workflow varies by order, but a structured review reduces assumptions before drawings, configuration and production are confirmed.
Share product types, quantities, dimensions or drawings, destination and target timing.
Review opening operation, series, glazing, finish, hardware and performance requirements.
Align the quotation and technical scope before the order and production information are approved.
Manufacture against the confirmed scope and complete the agreed quality-control checks.
Coordinate shipment information, documentation and applicable installation or after-sales guidance.
Frequently asked questions
Use these answers to prepare the first conversation. Series-specific requirements should still be confirmed against the selected product and project.
Send the project brief and let the team review a practical starting point.
Get a QuoteAn aluminum window and door manufacturer develops, configures and produces window and door systems for project requirements. DERCHI supports product selection, dimensions, opening types, glazing, finishes, hardware, production coordination and shipment preparation.
DERCHI works with importers, distributors, wholesalers, architects, builders, contractors, developers, commercial buyers, OEM partners and homeowners managing custom projects.
The range includes aluminum casement, awning, inward-opening, sliding and picture windows, together with sliding, folding, swing and entrance door systems. The final system should be selected around the opening, use, climate and performance target.
Start with opening dimensions, operation, building type, wind and water exposure, thermal and acoustic targets, glass requirements, finish and applicable local requirements. Send drawings or a schedule so the project team can review suitable series.
Yes. Customization can cover dimensions, configurations, frame finishes, glass build-ups, opening directions, hardware and packaging. Availability depends on the selected product series and verified project requirements.
The official DERCHI catalogue presents certificates, authorizations or test documents referencing NFRC, AS 2047, CSA, CE, ISO 9001, ENERGY STAR Canada and SGCC-related glass documentation. Request the document that matches the selected system and destination.
Submit your name, work email and project details through the quote form; company is optional. Include quantities, dimensions or drawings, required product types, delivery location and any performance targets for a more useful review.
Lead time depends on the selected series, customization, quantity, drawing approval, materials and destination. DERCHI confirms the production and delivery schedule after the technical requirements and order scope are reviewed.
Quality control is coordinated across requirement confirmation, materials, machining, assembly, glazing, hardware, sealing, functional checks, final inspection and shipment preparation. The official catalogue states that products receive full inspection before shipment.
Project support can include production updates, shipping coordination, product documentation and installation or after-sales guidance relevant to the confirmed order. Confirm the exact support scope with the project team before purchase.