20" X 20" Aluminum Access Panel Gypsum Board/Sheet Rock Door For Wall / Ceiling Application (PUSH-LOCK DOOR) With Frame - [Outer Dimensions: 21" Width X 21" Height] return grille + Product Details Size - 4" Round Duct Pipe Product Details Size The SHEASC10W1-HP

+ Product Details Size - 30"w X 6"h X 2"d (for duct opening measurement only)

actual front end outer dimensions are approximately 24 5/8" width X 28 5/8" height

+ Product Details Size – 12"w X 10"h is the size for the duct opening measurement only

+ Product Details Size - 30"w X 32"h is the size for the duct opening measurement only

75"H – fits a 16" X 8" duct opening

20" X 20" Aluminum Access Panel Gypsum Board Sheet Rock Door For Wall Ceiling Application (PUSH LOCK DOOR) With Frame [Outer Dimensions: 21" Width X 21" Height] return grille + Product Details Size 4" Round Duct Pipe Product Details Size The SHEASC10W1 HP + Product Details Size 30"w X 6"h X 2"d (for duct opening measurement only) actual front end outer dimensions are approximately 24 5 8" width X 28 5 8" height