8"W X 8"H [Duct Opening] 3-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 9.75"W X 9.75"H] 10in diameter actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

actual front end outer dimensions are approximately 30 5/8" width X 26 5/8" height

+ Product Details Size - 12"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are 11

Actual Filter Size – 29 3/4"w x 33 3/4" x 1"

of up to 300m3/h

8"W X 8"H [Duct Opening] 3 Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 9.75"W X 9.75"H] 10in diameter actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG A 1212 actual front end outer dimensions are approximately 30 5 8" width X 26 5 8" height + Product Details Size 12"w X 18"h is the size for the duct opening measurement only