12" X 12" Aluminum Insulated Fire Resistant Access Panel Door For Wall / Ceiling Application (Lock and Key) With Frame - [Outer Dimensions: 13" Width X 13" Height] Compatible with Duct 8" while the included safety wire

while the included safety wire provides added security to prevent the door from falling off

+ Product Details Size - 30"w X 6"h Is The Size For The Duct Opening Measurement Only

+ Product Details Size – 16"w X 22"h pleated MERV 8 filter for HVAC return filter grille - 3 Pack

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 34" OR 34" X 16" duct opening (measured at the opening)

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12" X 12" Aluminum Insulated Fire Resistant Access Panel Door For Wall / Ceiling Application (Lock and Key) With Frame - [Outer Dimensions: 13" Width X 13" Height] Compatible with Duct 8" while the included safety wire+ Product Details Size 12" X 12" is the size for the drywall opening measurement only, actual front end outer dimensions are 13" width X 13" 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.