18" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling return grille + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 24" OR 24" x 20" duct opening (measured at the opening)

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Universal Fit – Measures 6-1/4" wide x 4-3/4" high x 3" deep

High Quality – Solid rigid steel body for durability and reliability

Filter Grille features a user-friendly plastic latch that requires no screwdriver for opening

18" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling return grille + Product Details Perfect Fit+ 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