3/11/2023 0 Comments 24 x 24 access panel plaster ring![]() ![]() All door sizes equal or smaller than 864 sq inches fall within the standards. The maximum surface area is 864 sq inches. Note 1: Maximum door size 24" x 36" can also be calculated by multiplying the surface area of the door (24"x36"). Call us at 1-85 Fire Rated and General Access Doors - Panels for Drywall, Ceiling, Floor, Roof - Custom Sizes.
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