18" X 18" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 12in diameter reducing energy costs and maximizing

reducing energy costs and maximizing HVAC system lifespan

+ Product Details Size – 6"w X 6"h is the size for the duct opening measurement only

expanding or retracting the gap to meet your precise needs

please note that the total outer dimensions of the grille measure 8" in diameter

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18" X 18" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 12in diameter reducing energy costs and maximizing+ Product Details Size 18"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 875" width X 20" 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