F-Series · Fiberglass
GR70 Casement Window
A 70 mm outward-opening casement in pultruded fiberglass — the workhorse operable window for multifamily and modular elevations, and the frame shown across the eight factory finishes.
Frame
Pultruded fiberglass · 70 mm
Opening
Casement
Glass package
Double or triple · up to 40 mm
Whole-window U-value
0.16 Calculated
Certified: third-party tested (NFRC, CSA)
Calculated: LBNL THERM / WINDOW
Project-specific: by size and glass
The casement swings outward on concealed hinges for a clean interior face and a full-perimeter seal that tightens under wind pressure. On a fiberglass frame it stays dimensionally stable through heat and cold, so the seal keeps its grip for decades.
Technical specifications
| Frame depth | 70 mm |
| Frame material | Pultruded fiberglass, powder-coated |
| Glazing pocket | Up to 40 mm |
| Opening | Casement, outward |
| Whole-window U-value | 0.16 W/m²K Calculated |
| SHGC | 0.20–0.50 by glass Project-specific |
| Finishes | 8 factory finishes |
Certified values are published as NFRC and CSA testing completes. Calculated values come from LBNL THERM and WINDOW models of the specific assembly. Project-specific values depend on size and glass package.
Glass & glazing options
Double or triple · up to 40 mm. Low-E and solar-control coatings, warm-edge spacers, argon or krypton fill, laminated and acoustic packages to suit the project.
Hardware
German tilt-turn hardware with concealed hinges and multi-point locking. Handle finishes in nine anodized and powder-coated options — see Finishes.
Sizes & configurations
Single and coupled multi-lite arrangements. Maximum sizes are governed by the weight of the glass package and, for the A-Series, the design wind load; see drawings for limits.
Drawings & details
Head, jamb, and sill sections, anchoring and interface details, and DXF profiles available on request while the drawing library is finalized.
Installation
Rough-opening tolerances, substrate requirements, and air-barrier interface guidance follow the F-Series installation manual. See Air Barrier Interface and Installation.
Downloads & resources
Spec sheet, NFRC label (on certification), and BIM objects will be posted here. Ask us for the current data package for your project.
