10" X 8" [Duct Opening] 1-Way Air Vent Adjustable Aluminum Curved Blades Integral Multi-Shutter Damper HVAC Diffuser [Outer Dimensions: 11.75"W X 9.75"H] 8in diameter Actual Filter Size – 31 Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

Actual Filter Size – 31 3/4"w x 5 3/4" x 1"

+ Product Details Size - 24"w X 32"h is the size for the duct opening measurement only

+ Product Details Size – 8" x 16" or 16" x 8" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 22 5/8" width X 24 5/8" height

+ Product Details Size – 32"w X 22"h is the size for the duct opening measurement only

10" X 8" [Duct Opening] 1 Way Air Vent Adjustable Aluminum Curved Blades Integral Multi Shutter Damper HVAC Diffuser [Outer Dimensions: 11.75"W X 9.75"H] 8in diameter Actual Filter Size – 31 Compatible With Duct 7in Applications This sheet metal DDAG A 1212 Actual Filter Size – 31 3 4"w x 5 3 4" x 1" + Product Details Size 24"w X 32"h is the size for the duct opening measurement only