F-Series · Fiberglass
GR70 Swing Door
A 70 mm inward-opening fiberglass swing door — a deeper, higher-performing entry and balcony door than the GR60, with multi-point locking and a low-threshold option.
An inward-swinging fiberglass door on a deeper 70 mm frame for better thermal performance. Multi-point locking pulls the leaf to a full-perimeter seal, and a low, accessible threshold keeps the transition flush.
Technical specifications
| Frame depth | 70 mm |
| Frame material | Pultruded fiberglass, powder-coated |
| Glazing pocket | Up to 40 mm |
| Opening | Hinged, inward swing |
| Locking | Multi-point |
| Threshold | Standard or low / accessible |
| Whole-window U-value, ZERO 04 | 0.115 Btu/h·ft²·°F (0.65 W/m²K), R-8.7, at NFRC size 960 × 2090 mm Calculated |
| Whole-window U-value, ZERO 05 | 0.119 Btu/h·ft²·°F (0.67 W/m²K), R-8.4 Calculated |
| Whole-window U-value, ZERO 24 double glazed | 0.235 Btu/h·ft²·°F (1.34 W/m²K), R-4.2, within the Massachusetts energy code Calculated |
| Center-of-glass U-value | ZERO 04: 0.044 to 0.047 Btu/h·ft²·°F (R-21 to R-23) · ZERO 05: 0.054 (R-18.5) Calculated |
| SHGC, center of glass | KØLD 0.49 / 0.35 · MILD 0.35 / 0.27 · HEIT 0.26 / 0.20 (ZERO 05 / ZERO 04) Calculated |
| Visible light, center of glass | KØLD 76% / 64% · MILD 67% / 53% · HEIT 61% / 45% (ZERO 05 / ZERO 04) Calculated |
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.
What is a swing door?
A swing door is hinged on one side and opens like a standard door, inward or outward. Multi-point locking draws the leaf tight to a continuous perimeter seal, and a low, accessible threshold keeps the transition flush. Swing doors suit entries, balconies, and terraces.
Thermal section (THERM heat map)
GR70 Swing Door · Head. Whole door 0.115 Btu/h·ft²·°F (R-8.7) with ZERO 04, 0.119 (R-8.4) with ZERO 05, at 960 × 2090 mm. Calculated
Modeled in LBNL THERM 8.1 at NFRC winter conditions, 0°F outside and 70°F inside. The red band on the room side shows the frame and glass staying close to room temperature; the lines are isotherms every 3°C (5.4°F).
Full engineering image ›All sections, ZERO 04 (PDF, 5.9 MB) ›ZERO 05 (PDF, 5.9 MB) ›Every section we model ›
Glass & glazing options
Standard glazing is the hybrid vacuum unit in one of six ZERO packages: three climates, each at two levels. ZERO 05 Daylight admits the most light and solar heat; ZERO 04 Ultimate has the lowest U-factor. For code-level projects, the double-glazed ZERO 24 packages are also available.
| Package | Center-of-glass U / R · SHGC · visible light |
| KØLD 05 · cold | 0.054 / R-18.5 · 0.49 · 76% |
| KØLD 04 · cold | 0.047 / R-21.1 · 0.35 · 64% |
| MILD 05 · mixed | 0.054 / R-18.6 · 0.35 · 67% |
| MILD 04 · mixed | 0.044 / R-22.6 · 0.27 · 53% |
| HEIT 05 · hot | 0.054 / R-18.6 · 0.26 · 61% |
| HEIT 04 · hot | 0.044 / R-23.0 · 0.20 · 45% |
| ZERO 24 KØLD · double glazed | 0.244 / R-4.1 · 0.57 · 83% |
| ZERO 24 MILD · double glazed | 0.241 / R-4.1 · 0.40 · 73% |
| ZERO 24 HEIT · double glazed | 0.242 / R-4.1 · 0.30 · 68% |
Quanex Super Spacer® Premium silicone-foam warm-edge spacer, argon-filled outer cavity.
Triple glazing, laminated and acoustic build-ups are also available to suit the project. Compare the ZERO packages ›
