20" X 20" Aluminum Insulated Fire Resistant Access Panel Door For Wall / Ceiling Application (Lock and Key) With Frame - [Outer Dimensions: 21" Width X 21" Height] RV Mobile Home + Product Details Size –

+ Product Details Size – 14"w X 20"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 36" x 34" OR 34" x 36" duct opening (measured at the opening)

+ Product Details Size – 12" x 12" is the size for the duct opening measurement only

9% pure copper)

High Quality – high-quality steel with counter-sunk screw holes (screws included) and no sharp edges

20" X 20" Aluminum Insulated Fire Resistant Access Panel Door For Wall / Ceiling Application (Lock and Key) With Frame - [Outer Dimensions: 21" Width X 21" Height] RV Mobile Home + Product Details Size –+ Product Details Size 20" X 20" is the size for the drywall opening measurement only, actual front end outer dimensions are 21" width X 21" 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.