Material: Steel: Cover and frame are 14 gauge G-90 paint bond galvanized steel; Aluminum: Cover and frame are 11 gauge
Cover: Breakformed, hollow-metal design with 1" concealed fiberglass insulation, 3" beaded, overlapping flange, fully
welded at corners, and internally reinforced for 40 psf (195 kg/m2) live load
Finish: Steel: Alkyd base red oxide primer; Aluminum: Mill finish
Latch: Positive hold/release mechanism controlled by a single UL-listed 165°F (74°C) fusible link. Designed to hold
the cover closed against a 90 psf (438 kg/m2) uplift force.
Hinges: Heavy-duty pintle hinges with 3/8" Type 316 stainless steel hinge pins
Gasket: Extruded EPDM rubber gasket permanently adhered to the cover
Hardware: Steel: Engineered composite compression spring tubes. Steel compression springs with electrocoated acrylic finish.
All other hardware is zinc plated/chromate sealed; Aluminum: Engineered composite compression spring tubes. Steel compression springs
with electrocoated acrylic finish. Type 316 stainless steel hinges. All other hardware is zinc plated/chromate sealed.
Performance Rating: Comply with UL 790 Class A (burning brand test)
• Special Sizes - available on request