24" X 24" Aluminum Insulated Fire Resistant Access Panel Door For Wall / Ceiling Application (Lock and Key) With Frame - [Outer Dimensions: 25" Width X 25" Height] Powder Coated Actual Filter Size – 21

Actual Filter Size – 21 3/4"w x 35 3/4" x 1"

+ Product Details Size - 20"w X 10"h X 2"d (for duct opening measurement only)

Unlike traditional doors that have visible frames and hinges

+ Product Details Size - 34"w X 36"h X 2"d (for duct opening measurement only)

angle them down for effective warmth distribution

24" X 24" Aluminum Insulated Fire Resistant Access Panel Door For Wall / Ceiling Application (Lock and Key) With Frame - [Outer Dimensions: 25" Width X 25" Height] Powder Coated Actual Filter Size – 21+ Product Details Size 24" X 24" is the size for the drywall opening measurement only, actual front end outer dimensions are 25" width X 25" height High Quality Strong and sturdy aluminum built to last. Design Aluminum material & color to give your space an attractive look & provide high durability corrosion protection no rust. Built in tumbler lock and key is provided Easy Access Provides easy access for HVAC, plumbing, electrical, crawlspace etc.