18" X 18" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Material_Aluminum + Product Details Size –

+ Product Details Size – 20"w X 14"h is the size for the duct opening measurement only

Durable and Long-Lasting – Built with high-impact clear plastic and premium materials for dependable performance

+ Product Details Size – 25"w X 30"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 14 5/8" width X 26 5/8" height

18" X 18" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Material_Aluminum + Product Details Size –+ 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