Thermal Break Double Casement Window
Overview
The Thermal Break Double Casement Windows are high-performance window systems designed for modern building envelopes where energy efficiency, indoor comfort, and long-term durability are required. The system uses a thermally insulated frame structure combined with double casement opening functionality.

Key Features
- Superior U-Value: 0.9 – 1.6 W/m²K (whole window, passive house compliant configurations available).
- Advanced Thermal Barrier: PA66 GF25 polyamide strips, 24 – 34 mm thermal break width.
- Verified Certification Standards: Fully simulated and verified under EN ISO 10077 and NFRC 100.
- Optimized Solar Control: SHGC range 0.25 – 0.48 tailored for specific ASHRAE climate zones.
- High-Performance Air Tightness: Infiltration ≤ 0.3 L/s·m² at 75 Pa static pressure (reduces HVAC building energy loads).
- Condensation Resistance: No condensation at −20°C exterior / 20°C interior (CRF rated for high-humidity interiors).
Performance
product parameters
Sound insulation
36dB(GB/T 8485)
Thermal insulation
Grade 7 (GB/T 8484)
Air tightness
Grade 7 (GB/T 7106)
Water tightness
Grade 6 (GB/T 7106)
Wind pressure resistance
Grade 8 (GB/T 7106)
Engineering Options
- Frame Profiles: 70 mm / 82 mm / 95 mm depths to match specified wall insulation layers
- Hardware: Inward/outward configurations utilize a unified hardware profile, reducing on-site installation errors and spare part inventory
- Interface Compatibility: Standardized detailing for seamless integration with curtain walls, masonry, timber, and precast concrete openings
Manufacturing Capacity
- Capacity: 18,000 – 25,000 m²/month across 3 automated production lines
- Project Scaling: Peak output ramps up to 5,000 m²/week to meet tight jobsite schedules
- MOQ: From 50 m² per batch for custom architectural specifications
- Fast-Track Delivery: 12 – 15 day expedited production cycle available for critical-path project delays (surcharge applies)
After-Sales Service
- Structural Warranty: 15 years (Commercial) / 10 years (Residential) on profile and thermal break integrity.
- Component Warranty: 5 years on heavy-duty architectural hardware and weather seals.
- Field Support: Single point-of-contact project engineer assigned to orders ≥ 1,000 m² for 24/48-hour technical resolution.
- Lifecycle Supply: Guaranteed availability of matching profiles, gaskets, and hardware for 10 years post-delivery.
FAQs
1. What information do you need from us to start a quotation?
We typically require architectural drawings (DWG/PDF), project location, estimated quantity, and preferred delivery timeline.
2. Can you support large-scale phased construction projects?
Yes. Orders can be scheduled in phased production batches to match construction sequencing and site readiness.
3. Do you support third-party inspection during production or before shipment?
Yes. Factory inspection by third-party agencies can be arranged at defined production milestones or before final packing.
4. Can the system be adapted to different regional building codes?
Yes, configurations can be adjusted to meet different regional compliance requirements depending on project location and specification standards.
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