4"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 5.25"W x 5.25"H] Filter Grille + Product Description Upgrade your AD-S-230-10x10 Actual Filter Size 25 Width_8in

+ Product Description Upgrade your HVAC system with our Premium Quality Straight Round Stack Boot

75" Deep - Will Fit All Garrage Doors - Insulated And Non Insulated Garrage Doors [The Hole In The Door SHould Be: 15 ¼ x 9 ¾]

+ Product Details Size - 12"w X 28"h X 2"d (for duct opening measurement only)

+ Product Details Size - 34"w X 20"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 12" OR 12" x 24" duct opening (measured at the opening)

4"W X 4"H [Duct Opening] Linear Aluminum Clip On Bar Return Air Grille [Outer Dimensions: 5.25"W x 5.25"H] Filter Grille + Product Description Upgrade your AD S 230 10x10 Actual Filter Size 25 Width_8in + Product Description Upgrade your HVAC system with our Premium Quality Straight Round Stack Boot 75" Deep Will Fit All Garrage Doors Insulated And Non Insulated Garrage Doors [The Hole In The Door SHould Be: 15 ¼ x 9 ¾]