12"w X 12"h [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 13.75"H] Aluminum Adjustable Curved Blade + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size – 28"w X 12"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 30 5/8" width X 18 5/8" height

Actual Filter Size – 27 3/4"w x 25 3/4" x 1"

actual front end outer dimensions are approximately 20 5/8" width X 22 5/8" height

actual front end outer dimensions are approximately 12 5/8" width X 30 5/8" height

12"w X 12"h [Duct Opening] 3 Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 13.75"H] Aluminum Adjustable Curved Blade + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size – 28"w X 12"h is the size for the duct opening measurement only actual front end outer dimensions are approximately 30 5 8" width X 18 5 8" height