Bilco NB-50TB - Thermally Broken Roof Hatch, 30" x 54"

The Bilco NB-50TB 30X54 Thermally Broken Roof Hatch 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.

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 gasketing with enhanced weather and wind resistance
• Meets LEED® standards for recycled content
• High solar reflective index (SRI)

Specifications:

• Inside curb to curb measurement of 30″ x 54″
• 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.