12" X 8" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 9.75"H] Aluminum Adjustable Curved Blade designed for superior airflow (up Compatible with Duct 4" Product Details Size 32 LO246

designed for superior airflow (up to 95%) and easy filter access

actual front end outer dimensions are approximately 34 5/8" width X 8 5/8" height

+ Product Details Size - 28"w X 8"h is the size for the duct opening measurement only

+ Product Details Size - 36"w X 18"h is the size for the duct opening measurement only

Actual Filter Size – 24 3/4"w x 25 3/4" x 1"

12" X 8" [Duct Opening] 2 Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 9.75"H] Aluminum Adjustable Curved Blade designed for superior airflow (up Compatible with Duct 4" Product Details Size 32 LO246 designed for superior airflow (up to 95%) and easy filter access actual front end outer dimensions are approximately 34 5 8" width X 8 5 8" height