20" X 18" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_R-8.0 Pink + Product Details Size –

+ Product Details Size – 18"w X 34"h is the size for the duct opening measurement only

+ Product Details Size – 8"w X 4"h is the size for the duct opening measurement only

with an additional 1 7/8" width and 2" height

this filter grille never rusts and withstands long-term use in any environment

20" X 18" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_R-8.0 Pink + Product Details Size –+ Product Details Size 20"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