30" x 54" Ship Stair Access Roof Hatch - Aluminum - Bilco

NB-50 30" x 54" Ship Stair Access Roof Hatch - Aluminum - Bilco

The NB-50 Ship Stair Access Roof Hatch - Aluminum has an anti-corrosive aluminum mill finish material with a single door that allows easy, convenient, and secure access for persons, tools, and equipment via a stairway and an extruded EPDM gasket to prevent leakages. The NB-50's 1-inch (25 mm) concealed fiberglass insulation saves energy costs and for weather resistance.  

Why install the NB-50?        

Affordable: The NB-50 roof hatch also provides a cost-effective solution to address your roof hatch needs for your commercial building. In addition, this product is easy to install without special tools and requires no maintenance.      

Super-Durability: This roof hatch is tough and long-lasting with its aluminum material. And no need to worry about dents and corrosion with its 11 gauge aluminum mill finish that promises durability and aesthetics.   

Variety: If you are looking for multiple product options, you can choose from NB-50's various sizes and options that will surely fit your commercial building roof.     

Specifications:      

• Cover and Frame: 11 gauge (2.3 mm) aluminum.  
• Cover: Brake formed, hollow-metal design with 1 inch (25 mm) concealed fiberglass insulation, 3 inches (76 mm) beaded, overlapping flange, fully welded at corners, and internally reinforced for 40 psf (195 kg/m2) live load  
• Curb: 12 inches (305 mm) in height with integral cap flashing, 1 inch (25 mm) fiberboard insulation, fully welded at corners, and 3-1/2 inch (89 mm) mounting flange with 7/16 inch holes (11 mm) provided for securing the frame to the roof deck  
• Gasket: Extruded EPDM rubber gasket permanently adhered to cover  
• Hinges: Heavy-duty pintle hinges with 3/8 inch (9 mm) Type 316 stainless steel hinge pins  

• Latch: Slam latch with the interior, 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  
• Hardware: Comes with engineered composite compression spring tubes with steel compression springs packed in grease. All other hardware is zinc-plated/chromate sealed.     

Call Us Today!     

Why Choose Access Doors and Panels? Because we are your reliable source of practical and handy access panels for your walls, ceilings, floors, and even your roofing system. We understand your access and security needs, so you can always talk to our expert product specialists and apply for credit! Call us at (800)-609-2917 and experience our excellent products and services! 

Product Spec Sheet:
Door Size:	36" wide x 30" high
Material:	Aluminum