12" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w28h28 + Product Details Size –

+ Product Details Size – 32"w X 30"h is the size for the duct opening measurement only

+ Product Details Size - 24"w X 28"h is the size for the duct opening measurement only

Design – Rigid gauge ABS plastic

actual front end outer dimensions are approximately 20 5/8" width X 26 5/8" height

powder-coated surface is scratch-resistant

12" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w28h28 + Product Details Size –+ Product Details Size 12"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 875" width X 6" 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