D20 48" x 48" Equipment Access Roof Hatch - Steel - Double Leaf - Bilco

The D20 Equipment Access Roof Hatch's primary materials are steel with anti-corrosion properties. It has a proven and tested durability that can withstand severe weather conditions and hold heavy loads. These features make steel an ideal roof hatch material that allows the service team to access the roof quickly and protects the people inside the building all year round, specifically during heavy wind, rain, or snow. 

Why Install D20? 

Convenient: Convenience is D20's key benefit, which allows roofers, installers, maintenance personnel, and repair teams to quickly and effortlessly bring pieces of large equipment into the roof. It can also help minimize the business' downtime during scheduled service visits.  

Secure: The equipment roof hatch has durable and reliable positive latching and locking mechanism. It can help secure and protect any equipment installed on the roof or the building's assets from unauthorized access, theft, and possible damages due to nature's extreme climate or natural disasters.  

Compliance: The D20 equipment roof hatch has to meet specific rules, regulations, and legal requirements to make it fully operational for industrial, institutional, and commercial buildings with equipment and systems such as HVAC and solar panels, which require a routine check.  



  • 14 gauge (2mm) G-90 paint bond galvanized steel.  


  • Brake formed, hollow-metal design  
  • 1" (25mm) concealed fiberglass insulation 
  • 3" (76mm) beaded, overlapping flange 
  • fully welded at corners 
  • reinforced for 40 psf (195 kg/m2) live load 


  • 12" (305mm) in height with integral cap flashing 
  • 1" (25mm) fiberboard insulation 
  • fully welded at corners 
  • 3-1/2" (89mm) mounting flange 
  • has 7/16" holes (11mm) for securing the frame to the roof deck. 


  • Extruded EPDM rubber gasket  
  • permanently adhered to the cover 


  • 3/8" (9mm) type 316 stainless steel hinge pins. 
  • Heavy-duty pintle hinges 


  • Enclosed two-point spring latch 
  • interior and exterior turn handle 
  • padlock hasps 

Lift Assistance: 

  • Compression spring operators in telescopic tubes.  
  • Automatic hold-open arm with grip handle release. 

Finish: Alkyd base red oxide primer. 

Hardware: All hardware is zinc-plated/chromate sealed.  

Get the Best Deal Today!  

Access Doors and Panels offers a vast collection of reliable and customizable roof hatches that your building needs! Call us at (800)-609-2917 and get the best deal for your existing and upcoming projects! You may also check our blogs and expert articles here to learn more about the product. 

Product Spec Sheet:
Covers and frame are 11 gauge (2.3mm) aluminum.
Enclosed two point spring latch with interior and exterior turn handles and padlock hasps.
Type 304 stainless steel with bead blast finis
Excellent Services
BILCO 48" x 48" Steel Equipment Access Roof Hatch (Double Leaf) - Bilco
SKU # D-20-48-48

48" x 48" Equipment Access Roof Hatch - Steel - Double Leaf - Bilco

CONTACT US AT 1-800-609-2917