Bilco GS-50TB - Thermally Broken Aluminum Roof Hatch, 36" x 30"

Made in USA, this Bilco 48" x 48" Single-Door Personnel Access Roof Hatch is Thermally Broken Design. It features added insulation a frame and cover design that minimizes heat transfer between interior and exterior metal surfaces. The result is a product that resists harmful condensation and provides superior energy efficiency. The Thermally Broken design is available in all standard BILCO single leaf sizes (S, E, NB, L, F, GS*) and special single leaf sizes are available upon request.

FEATURES:

• Thermally broken cover and curb reduces heat transfer between interior and exterior surfaces to resist harmful condensation
• Ozone-friendly polyisocyanurate insulation (R-20+) provides superior energy efficiency
• Special EPDM gasket with enhanced weather and wind resistance
• Meets LEED® standards for recycled content
• High solar reflective index (SRI)
• Available in all Bilco standard roof hatch sizes and special sizes are available upon request
• Material: Cover and frame are 11 gauge (2.3 mm) aluminum.
• Cover: Brake-formed, hollow-metal design with 3" (75 mm) concealed polyisocyanurate insulation (R Value of 20+), 5" (100 mm) beaded, overlapping flange, fully welded at corners, and internally reinforced for 40 psf (195kg/m2) live load. (See note below for Type GS-50-TB models)
• Curb: 12" (305 mm) in height with integral cap flashing, 3" (75 mm) polyisocyanurate insulation (R Value of 20+), fully welded at corners, and 5-1/2" (114 mm) mounting flange with 7/16" holes (11 mm) provided for securing frame to the roof deck.
• Gasket: Extruded EPDM rubber gasket permanently adhered to cover.
• Hinges: Heavy-duty pintle hinges with 3/8" (9 mm) Type 316 stainless steel hinge pins.
• Latch: Slam latch with interior and exterior turn handles and padlock hasps.
• Lift Assistance: Compression spring operators enclosed in telescopic tubes. Automatic hold-open arm with grip handle release.
• Finish: Mill finish aluminum.
• Hardware: Engineered composite compression spring tubes and steel compression springs packed in grease. Type 316 stainless steel hinges. All other hardware is zinc plated/chromate sealed.
• Requires Thermally Broken Safety Railing, 4'0" x 4'0"