Type S roof hatches, 36" x 30" (914mm x 762mm), provide convenient, reliable access to roof areas by means of a fixed interior ladder. Product features a counter-balanced cover design for easy one-hand operation and fully gasketed and insulated construction for weather resistance.
Available in galvanized steel or aluminum construction.
Features:
- Engineered with compression spring operators to provide smooth, easy, one-hand operation, regardless of size
- Automatic hold-open arm locks the cover in the open position to ensure safe egress
- Overlapping cover design, full welded corners on cover and curb, EPDM rubber gasket, and fully insulated cover and curb ensure weathertightness and energy efficiency
Materials:
Cover and frame are 14 gauge (2 mm) G-90 paint bond galvanized steel.
Cover: Brakeformed, hollow-metal design with 1" (25 mm) concealed fiberglass insulation, 3" (76 mm) beaded, overlapping flange, fully welded at corners, and internally reinforced for 40 psf (195 kg/m2) live load.
Curb: 12" (305 mm) in height with integral capflashing, 1" (25 mm) fiberboard insulation, fully welded at corners, and 3-1/2" (89 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: Steel: Alkyd base red oxide primer.
Hardware: Engineered composite compression spring tubes with steel compression springs packed in grease. All other hardware is zinc plated/chromate sealed.
https://www.bigrocksupply.com/Bilco-S-20-36-x-30-Roof-Hatch.html