Adjustable airflow control – Adjustable airflow control: The system allows users to customize the amount of air supply
Designed with two mounting base options—solid and ring—it offers flexible installation
actual front end outer dimensions are approximately 31
Actual Filter Size – 21 3/4"w x 25 3/4" x 1"
actual front end outer dimensions are 9
20" X 6" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 12" Round Duct Pipe Adjustable airflow control – Adjustable+ Product Details Size 20"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 875" width X 8" 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