12" X 6" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Return Grille + Product Details Size -

+ Product Details Size - 20"w X 8"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 38 5/8" width X 18 5/8" height -

Easy Installation – Comes with all necessary installation screws for a quick and hassle-free setup

actual front end outer dimensions are approximately 15

12" X 6" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Return Grille + Product Details Size -+ Product Details Size 12"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 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