14" X 14" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 6" Round Duct Pipe + Product Details Size –

+ Product Details Size – 26"w X 20"h is the size for the duct opening measurement only

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

+ Product Details Size - 28"w X 18"h is the size for the duct opening measurement only

Its smooth

+ Product Details Size - 28"w X 34"h is the size for the duct opening measurement only

14" X 14" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 6" Round Duct Pipe + Product Details Size –+ 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