





These 2 lite casement windows feature thermal-break 6063-T5 aluminum frames and outward opening sashes, built for B2B project buyers who need energy-efficient fenestration with flexible ventilation. The double tempered insulated glass with argon fill supports thermal and acoustic comfort across residential and commercial applications.
- Thermal-break 6063-T5 aluminum with PA66 insulation strip
- 5+27A+5 mm argon-filled double tempered glass as standard
- WEHAG hardware with multi-point locking system
- Configurable 2-lite layouts with operable and/or fixed lites

Product Details
The structural foundation uses thermal-break 6063-T5 aluminum profiles available in 109, 118, and 127 mm frame depths, paired with PA66 insulation strips to interrupt heat transfer across the frame. Standard glazing is 5+27A+5 mm double tempered insulated glass with argon gas and a PVDF aluminum spacer, while upgrades such as Low-E, laminated, or triple glazing can be discussed per project requirements. WEHAG handles and hinges manage the outward opening mechanism, with two-point or six-point locking depending on the selected series.
Unlike inward-opening units, the outward opening casement window design preserves interior floor space, which matters in compact apartments, bathrooms, and corridors where furniture or fixtures sit close to the window. The 2 lite casement windows configuration allows one operable sash paired with a fixed pane, or two operable sashes, giving architects flexibility to balance ventilation and unobstructed views. Buyers should confirm which lite opens, the split ratio, and opening direction during quoting, since these details depend on final drawings and engineering review.
Product Features
Thermal Break Frame: The 6063-T5 aluminum profile with PA66 insulation strip reduces heat conduction, making these thermal break aluminum casement windows suitable for energy-conscious building projects with strict envelope requirements.
Argon Insulated Glass: Standard 5+27A+5 mm double tempered units with argon fill improve thermal performance and acoustic comfort, with Low-E or triple upgrades available for this argon filled casement window.
WEHAG Hardware: WEHAG handles and hinges provide smooth outward operation, while the black or silver finish coordinates with contemporary interior palettes and architectural hardware schedules across project tiers.
Outward Opening Design: Sashes swing outward to preserve interior floor space, which benefits compact rooms, bathrooms, and corridors where furniture placement or fixture clearance would conflict with inward-opening panels.
Configurable 2-Lite Layouts: Choose one operable plus one fixed lite, double operable sashes, or other combinations to balance ventilation needs with fixed glazing for unobstructed exterior views and daylighting.
Weather Performance: Target ratings of 700 Pa water tightness and 5 KPa wind resistance aim to handle demanding climates, though buyers should confirm final values per series and test reports.

Customizable Styles
Glass Upgrades: Low-E, laminated, triple, tinted, reflective, frosted, and bullet-proof options are available beyond the standard argon-filled double tempered configuration.
Frame Depth: Select from 109, 118, or 127 mm profile depths to match different performance tiers and wall construction requirements across project types.
Color and Finish: Choose from Pearl White, Starry Sky Black, Quartz Gray, Deep Sea Blue, wood grain finishes, or custom PVDF coatings with applicable upcharges.
Size Customization: Opening sash dimensions typically range W350-750 mm by H400-1600 mm, with fixed glass up to 8-12 m2 depending on series selection.
Layout Options: Configure as one operable plus one fixed lite, double sash, side-by-side casement, or other combinations per project drawings and ventilation requirements.
Hardware Accessories
WEHAG Handle: Available in black or silver finish to match modern architectural hardware schedules and interior design palettes across residential and commercial projects.
WEHAG Hinge: Engineered for outward opening operation, providing stable sash support during daily use while maintaining alignment over repeated open-close cycles.
Multi-Point Lock: Black two-point or six-point locking system depending on series, offering enhanced security and improved compression sealing against the frame.
Casement Limiter: Optional simple or safety limiter controls opening angle, preventing wind damage and restricting access while allowing controlled ventilation through the sash.
Mesh Screens: Optional 304 stainless steel high-definition mesh, anti-theft, diamond mesh, or 48-mesh high-transparency screens provide insect protection and ventilation security.
Basic Parameters
Performance Item | Available Information | Buyer Notes |
|---|---|---|
Thermal Insulation | U-Factor 0.23 (target) | Target value; confirm with final glass package and frame configuration before ordering. |
Wind Pressure Resistance | 5 KPa (target) | Target rating; verify against project wind load codes and final series selection. |
Water Tightness | 700 Pa (target) | Target spec; confirm per final series, drainage design, and applicable test reports. |
Air Tightness | 1.2 m³/(m·h) (target) | Target value; confirm with final sealing system and series-specific test documentation. |
Sound Insulation | 35 dB (target) | Target rating; actual performance depends on glass package and frame sealing selection. |
Product Specifications
Parameter | Details |
|---|---|
Product Name | 2 Lite Casement Windows |
Product Type | Casement window, outward opening |
Frame Material | Thermal-break 6063-T5 aluminum |
Profile Thickness | 1.8-2.0 mm (2.0 mm primary configuration) |
Frame Depth | 109/118/127 mm options |
Insulation Strip | PA66/DERCHI |
Glass Configuration | 5+27A+5 mm double tempered insulated, argon-filled |
Glass Spacer | PVDF aluminum spacer |
Opening Method | Outward opening / awning (operable lites); fixed (non-operable) |
Hardware | WEHAG handle and hinge; two-point or six-point lock |
Color Options | Pearl White, Quartz Gray, Starry Sky Black, Deep Sea Blue, wood grain, and more |
Size Range | Opening sash: W350-750 mm × H400-1600 mm; fixed glass: up to 8-12 m² |
Customization | Size, color, glass, layout, and hardware per project drawings |
Notes | Final specifications confirmed per selected series and project requirements |

Advantages
Energy Efficiency: Thermal break aluminum frame combined with argon-filled insulated glass helps reduce heating and cooling demands in both residential and commercial building envelopes.
Space Optimization: Outward opening sashes keep interior floor area clear, which is valuable in compact urban units, bathrooms, kitchens, and rooms with limited clearance.
Weather Resistance: Target ratings of 700 Pa water and 5 KPa wind pressure aim to withstand demanding climates, subject to final series confirmation.
Design Flexibility: Multiple frame depths, twelve-plus color options, and configurable 2-lite layouts allow architects to match aesthetic and performance requirements across diverse projects.
Project Support: Customization from low minimum quantities, export-grade packaging with sea-water protection, and multiple series tiers support B2B procurement at various project scales.
Application Scenarios
Apartment: Compact urban apartments benefit from the outward opening design that preserves limited interior space, while the argon-filled glass helps maintain comfortable indoor temperatures throughout seasonal changes.
Home Office: A 2-lite configuration with one operable sash provides controlled ventilation during focused work sessions, and the thermal break frame supports a quiet, temperature-stable working environment.
Hotel: Hotels can specify consistent color finishes and WEHAG hardware across guest rooms, with the double-lite layout offering natural light and ventilation without sacrificing interior space.
Office Building: Commercial facades can incorporate fixed lites for unobstructed views paired with operable sashes for fresh air, with frame depths selected to meet local wind pressure requirements.
Outdoor: For outdoor-facing enclosures, buyers should confirm water tightness, wind resistance, and surface finish durability against local climate exposure before finalizing the series and glass package.
Residential Building: Multi-unit residential projects can leverage the configurable 2-lite layouts and color options to maintain design consistency while meeting different room ventilation and daylighting needs.
Exterior: Exterior facade applications require confirmation of weather resistance ratings, drainage design, and installation conditions to ensure long-term performance under wind, rain, and temperature cycling exposure.
Villa: Villas with larger openings can utilize fixed glass up to 8-12 m2 per series, combined with operable sashes for ventilation, creating expansive views with controlled airflow in this double lite casement window configuration.
Inquiry Guidance
To request a quote, please share your project location, required size, quantity, preferred frame color, glass type, hardware requirements, and drawings or reference photos if available.
FAQ
What are 2 lite casement windows?
They are windows with two glass sections, where one or both lites can be operable outward-opening sashes while others remain fixed. The configuration depends on project drawings and ventilation requirements.
Where can these windows be used?
Suitable for apartments, villas, hotels, office buildings, residential complexes, home offices, and exterior facades. Buyers should confirm weather resistance and local building code compliance for their specific project location.
Can the windows be customized?
Yes. Glass type, frame depth, color, size, hardware, and 2-lite layout are configurable. Buyers should provide project drawings and requirements so the supplier can confirm feasibility and pricing.
What information is needed for a quote on 2 lite casement windows?
Provide project drawings, rough opening sizes, lite split and operable side, glass package, color, hardware preference, screen selection, project country, and required certifications. The supplier will confirm pricing, MOQ, and lead time.
What is the lead time?
Reference lead time is 25-35 days depending on order volume, but buyers should confirm the exact delivery schedule per order after finalizing specifications and production drawings with the supplier.
Are certifications available?
NFRC, CE, AS2047, CSA, and ISO9001 are cited at the brand level. Buyers should verify which certifications apply to the specific product configuration and target market before ordering.
How are the windows packaged for shipping?
Export packaging includes wooden frames, protective tape, pallet fixing, plastic belts, PE films against sea water, and air bags between pallets to minimize transit damage during international shipping.

