16" X 16" Aluminum Access Panel Gypsum Board/Sheet Rock Door For Wall / Ceiling Application (PUSH-LOCK DOOR) With Frame - [Outer Dimensions: 17" Width X 17" Height] Insulated Line Set Actual Filter Size – 21

Actual Filter Size – 21 3/4"w x 23 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 32" x 32" duct opening (measured at the opening)

The total outer size of this grille is the listed size

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 32" OR 32" x 30" duct opening (measured at the opening)

+ Product Details Size - 28"w X 16"h X 2"d (for duct opening measurement only)

16" X 16" Aluminum Access Panel Gypsum Board/Sheet Rock Door For Wall / Ceiling Application (PUSH-LOCK DOOR) With Frame - [Outer Dimensions: 17" Width X 17" Height] Insulated Line Set Actual Filter Size – 21+ Product Details Size 16" X 16" is the size for the drywall opening measurement only, actual front end outer dimensions are 17" width X 17" 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