If your building deals with oil and heat, then this product is excellent for you. The GDD is a grease duct access door with UL and ULC certifications due to this door being grease and airtight thanks to its 16 gauge steel structure and high-temperature resilient gasket and sealant. It meets the standard for mechanical codes, and sometimes expectations exceed with this door. 

Other features you can find include:

Material: 16 gauge galvanized steel

Lock/Latch: Self-latching bolt, operated by flush key.

Flange: 1 flange

Hinge: None, Removable.

Finish: Galvanized Steel.

Contact Acudor now at 1-888-622-8367 to purchase them for your construction projects! We also offer different sizes to ensure they fit perfectly on any roof opening.