18" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Compatible With Duct 8in + Product Details Size -

+ Product Details Size - 20"w X 6"h is the size for the duct opening measurement only

High quality – High quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

Perforated steel grille for return air flow

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

actual front end outer dimensions are approximately 7

18" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Compatible With Duct 8in + Product Details Size -+ Product Details Size 18"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 875" width X 10" 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