18" X 6" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Fixed Blades with Damper + Product Details Size –

+ Product Details Size – 36"w X 12"h is the size for the duct opening measurement only

The tool-free latch allows hassle-free maintenance

Actual Filter Size – 15 3/4"w x 25 3/4" x 1"

/* increased padding */ border-radius: 6px

18" X 6" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Fixed Blades with Damper + Product Details Size –+ Product Details Size 18"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 875" width X 8" 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