14" X 10" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 11.75"H] fixed bar Installation Location – Sidewall or Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

Installation Location – Sidewall or ceiling

+ Product Details Size - 16"w X 20"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 10 5/8" width X 12 5/8" height

+ Product Details Size - 28"w X 4"h is the size for the duct opening measurement only

Actual Filter Size – 13 3/4"w x 15 3/4" x 1"

14" X 10" [Duct Opening] 2 Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 11.75"H] fixed bar Installation Location – Sidewall or Compatible With Duct 7in Applications This sheet metal DDAG A 1212 Installation Location – Sidewall or ceiling + Product Details Size 16"w X 20"h is the size for the duct opening measurement only