20" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 10in diameter Actual Filter Size – 23

Actual Filter Size – 23 3/4"w x 17 3/4" x 1"

Upgrade your air distribution strategy today – invest in the efficiency and convenience of the 8" Radial Damper

actual front end outer dimensions are approximately 42 5/8" width X 22 5/8" height -

+ Product Details Size – 22"w X 36"h is the size for the duct opening measurement only

20" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 10in diameter Actual Filter Size – 23+ Product Details Size 20"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 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