Round Stack Boot 12" X 3.25" X 6"- is Compatible with Duct 6" Height_14in + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size - 10"w X 10"h Is The Size For The Duct Opening Only

If you are looking to enhance your project with a top-of-the-line unit

Actual Filter Size – 35 3/4"w x 5 3/4" x 1"

+ Product Details Size - 30"w X 14"h is the size for the duct opening measurement only

+ Product Details Size - 18"w X 28"h is the size for the duct opening measurement only

Round Stack Boot 12" X 3.25" X 6" is Compatible with Duct 6" Height_14in + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 10"w X 10"h Is The Size For The Duct Opening Only If you are looking to enhance your project with a top of the line unit