14" x 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 2-Way Deflection 875" width X 21

875" width X 21

and sound level range of NC 25 to 35

Actual Filter Size – 7 3/4"w x 33 3/4" x 1"

+ Product Description Maximize HVAC efficiency with our aluminum eggcrate return air filter grille

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

14" x 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 2-Way Deflection 875" width X 21+ Product Details Size 14"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 875" width X 6" height. High Quality High quality steel construction, no scuff powder coat durable finish, smooth, shiny, scratch resistant, no sharp edges, 2 recessed screw holes on each side with screws included, screws same color as vent cover, easy installation. Adjustable airflow control Adjustable airflow