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

+ Product Details Size – 26"w X 10"h is the size for the duct opening measurement only

Actual Filter Size – 23 3/4"w x 25 3/4" x 1"

Elevate your space with hassle-free functionality and experience superior ventilation today

actual front end outer dimensions are approximately 20 5/8" width X 14 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