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

+ Product Details Size - 14"w X 6"h X 2"d (for duct opening measurement only)

+ Product Details Size – 18"w X 10"h is the size for the duct opening measurement only

electrical components

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 26" OR 26" X 16" duct opening (measured at the opening)

Actual Filter Size – 13 3/4"w x 27 3/4" x 1"

Round Stack Boot 12" X 3.25" X 7" round Compatible with 7" Duct Access Door + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 14"w X 6"h X 2"d (for duct opening measurement only) + Product Details Size – 18"w X 10"h is the size for the duct opening measurement only