* Free Freight Terms Do Not Apply *
Price: $1,550.00
Item #BILCO-NB-50
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Description
The Bilco NB-50 Roof Hatch is designed for ship stair access, providing a 30 inch by 54 inch clear opening for safe and convenient rooftop entry. Constructed from heavy-gauge galvanized steel, aluminum, or stainless steel, it is built for strength and durability. Fully insulated cover and curb reduce energy transfer, while the EPDM gasket and fully welded corners maintain a weather-tight seal. The NB-50 includes compression spring operators for one-hand operation and an automatic hold-open arm for safety during use.
Key Features:
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30x54 opening designed for ship stair access
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Heavy-duty galvanized steel, aluminum, or stainless steel construction
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1 inch polyisocyanurate insulation in cover and curb for improved thermal efficiency
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EPDM gasket and welded corners for weather tightness
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Compression spring operators for smooth, easy opening
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Automatic hold-open arm for safe rooftop access
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Slam latch with inside and outside handles, padlock provisio
Specifications
- Opening size: 30 inches x 54 inches
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Curb height: 12 inches standard
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Insulation: 1 inch polyisocyanurate in both cover and curb (approx. R-6)
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Material options: 14-gauge galvanized steel, 11-gauge aluminum, 14-gauge stainless steel
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Hardware: stainless steel hinge pins, compression springs, hold-open arm, slam latch
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Finish: mill finish aluminum, hot-dip galvanized steel, or optional powder coat
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Live load: 40 psf with 50 psf wind uplift
How To
- Prepare a 30x54 roof opening with structural curb support.
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Place the NB-50 hatch over the opening, aligning the flange with the curb.
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Secure the hatch to the curb through the pre-drilled flange holes using fasteners.
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Install hinges, compression springs, latch, and hold-open arm as directed.
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Test the hatch for proper lift assist, latch security, and weather seal.
FAQs
Q: What applications is the NB-50 designed for?
A: The NB-50 is built for ship stair access, providing a larger opening than ladder-access hatches.
Q: Is the NB-50 insulated?
A: Yes, it includes 1 inch polyisocyanurate insulation in both the cover and curb.
Q: What is the load rating of the NB-50?
A: It supports 40 psf live load with 50 psf wind uplift.
Q: Can the NB-50 be padlocked?
A: Yes, the slam latch includes padlock provisions.
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