HVAC Premium Stick on Side Take Off Galvanized Steel Metal | Pack of 1 Take Off Duct | 8" Stick on Side Take Off Duct is Compatible with Duct 8" 5" Diameter + Product Details Size – 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size – 18" x 20" or 20" x 18" is the size for the duct opening measurement only

+ Product Details Size - 14"w X 36"h X 2"d (for duct opening measurement only)

actual front end outer dimensions are approximately 26 5/8" width X 22 5/8" height

actual front end outer dimensions are approximately 27 5/8" width X 36 5/8" height

Actual dimensions: 21

HVAC Premium Stick on Side Take Off Galvanized Steel Metal Pack of 1 Take Off Duct 8" Stick on Side Take Off Duct is Compatible with Duct 8" 5" Diameter + Product Details Size – 4 X 12 Is CRFG2028 Width_14in + Product Details Size – 18" x 20" or 20" x 18" is the size for the duct opening measurement only + Product Details Size 14"w X 36"h X 2"d (for duct opening measurement only)