12" X 12" Aluminum Access Panel Gypsum Board/Sheet Rock Door For Wall / Ceiling Application (PUSH-LOCK DOOR) With Frame - [Outer Dimensions: 13" Width X 13" Height] Powder Coated If your filter opening is

If your filter opening is 14" wide by 20" long

+ Product Details Size - The listed 5" diameter refers specifically to the size of the duct opening

actual front end outer dimensions are approximately 24 5/8" width X 27 5/8" height

+ Product Details Size - 28"w X 32"h X 2"d (for duct opening measurement only)

Installation Steps

12" X 12" Aluminum Access Panel Gypsum Board/Sheet Rock Door For Wall / Ceiling Application (PUSH-LOCK DOOR) With Frame - [Outer Dimensions: 13" Width X 13" Height] Powder Coated If your filter opening is+ 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 and never rusts. Made with gypsum sheetrock for a seamless finish Design Aluminum frame material with sleek, shiny, durable white powder coat finish for an attractive look & moisture resistant to prevent mold & mildew buildup in indoor or outdoor