65–90 window series
Published platforms include fixed and tilt-and-turn windows across the 65, 70, 80 and 90 Series, with casement and awning configurations listed for the 65, 70 and 80 Series.
F1-THERM · GFRP FENESTRATION SYSTEMS
F1 Composites Fiberglass Window and Door Systems
F1-THERM is a family of pultruded GFRP frame systems, not one universal profile. F1 Composites publishes 65, 70, 80 and 90 Series window systems, a 90 Series swing entrance-door system and a 140 Series lift-and-slide door system. Supply can be finished units or unassembled profile lengths for local fabrication.
Reviewed 1 September 2026
Mixed: supplier-reported range and configuration-specific documents
The PHI and Intertek documents support named configurations and samples only. They do not certify every F1-THERM series, size, glazing build-up or fabrication route.
Finished units can combine frames, glazing, gaskets and hardware under one configuration. With profile-only supply, the downstream fabricator controls corner joints, drainage, glazing, hardware integration and finished-unit performance.
PRODUCT TYPES
What this family covers
Door systems
A 90 Series swing entrance-door system and a larger 140 Series lift-and-slide platform, each subject to the quoted size, glazing and hardware.
Two supply formats
Factory-finished glazed units or pultruded frame profile lengths for an experienced local window fabricator.
APPLICATION FIT
Where to evaluate it—and where to pause
Typical fit
Passive House and net-zero projects, cold climates, coastal buildings and envelopes where thermal bridges, condensation or corrosion matter.
Selection boundary
Start with whole-window thermal, air, water and structural requirements—not a generic conductivity claim for the frame material.
EVIDENCE BOUNDARIES
What the published evidence does—and does not—support
PHI Component-ID 2491wi03
The named 90-Series reference records Uw 0.78 W/(m²·K), class phB for a cool-temperate climate, valid through 31 December 2026. It names Chongqing Xianju New Material Co., Ltd. as manufacturer.
Intertek sample reports
Both reports name Fengdu New Material (Yancheng) Co., Ltd. as applicant and manufacturer. Report -001 covers one 1200 × 1800 mm 80-Series turn-and-tilt window; report -002 covers one 3000 × 2400 mm 140-Series lift-sliding door. Neither is family-wide certification.
3-Star English summary
The downloadable English file describes covered series and a date through 4 June 2030 but calls itself an unofficial summary. Regulatory use requires the original Chinese certificate and scope check.
RFQ CHECKLIST
Give the supplier a controlled starting point
- 1Opening schedule, sizes, opening modes, quantities and project climate
- 2Required Uw/Uf, air, water, wind, acoustic, security and code criteria
- 3Glazing, spacer, hardware, finish, color and finished-unit or profile-length supply
- 4Installation responsibility, exact evidence scope, packing, destination and date
Official sources
Source links open F1 Composites' official website or its published documents.