14" X 14" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 6" Round Duct Pipe featuring a 6" round duct

featuring a 6" round duct opening

+ Product Details Size – 40"w X 20"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 20 5/8" width X 18 5/8" height

+ Product Details Size - 26"w X 8"h is the size for the duct opening measurement only

Its smooth

14" X 14" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 6" Round Duct Pipe featuring a 6" round duct+ Product Details Size 14"w X 14"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 875" width X 16" 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