20" X 20"Universal Aluminum Access Panel Door For Wall / Ceiling Application (Push-Lock) With Solid Frame - [Outer Dimensions: 21" Width X 21" Height] w32h32 actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

actual front end outer dimensions are approximately 21" width X 21" height

+ Product Details Size – 16" x 26" or 26" x 16" is the size for the duct opening measurement only

Actual Filter Size – 13 3/4"w x 19 3/4" x 1"

+ Product Details Size - 20"w X 16"h X 2"d (for duct opening measurement only)

+ Product Details Size - 6"w X 24"h X 2"d (for duct opening measurement only)

20" X 20"Universal Aluminum Access Panel Door For Wall Ceiling Application (Push Lock) With Solid Frame [Outer Dimensions: 21" Width X 21" Height] w32h32 actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG A 1212 actual front end outer dimensions are approximately 21" width X 21" height + Product Details Size – 16" x 26" or 26" x 16" is the size for the duct opening measurement only