22" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 8" Round Duct Pipe the actual front end outer

the actual front end outer dimensions are 10" in diameter

Actual Filter Size – 31 3/4"w x 17 3/4" x 1"

+ Product Details Size - 18"w X 16"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 26 5/8" width X 28 5/8" height

22" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 8" Round Duct Pipe the actual front end outer+ Product Details Size 22"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 23. 875" width X 14" 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