S-40 36" x 30" Ladder Access Roof Hatch - Steel Curb & Aluminum Cover - Bilco      

The S-40 Ladder Access Roof Hatch - Steel Curb and Aluminum Cover has durable steel and smooth aluminum materials that allow easy, convenient, and secure access to the roof by using a fixed ladder. This ladder access roof hatch is perfect for your commercial building with its counter-balanced cover design for one-hand operation. It is fully gasketed and insulation for weather resistance.   

Why install the S-40?         

Affordable: The S-40 roof hatch also provides a cost-effective solution to address your commercial building's ladder access roof hatch needs. 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 steel and aluminum material. So there is no need to worry about dents and corrosion with its aluminum frame and steel cover, along with a mill aluminum and re-primer steel finish that shows toughness and durability.  

Variety: If you are looking for multiple product options, you can choose from S-40's various sizes and curb options that will surely fit your commercial building.      


  • The cover is aluminum, and the frame is steel.  
  • 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) hinge pins  
  • Latch: Slam latch with the 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 Cover and Red Primer Steel Frame  
  • Hardware: 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
Galvanized Steel
Excellent Services
Bilco 36 x 30 - Steel Roof Hatch Cover and Aluminum Curb
SKU # S-40-36-30

36" x 30" Ladder Access Roof Hatch - Steel Curb & Aluminum Cover - Bilco

(You save $608.94 )