12" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w28h28 Design – Rigid gauge ABS

Design – Rigid gauge ABS plastic

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

actual front end outer dimensions are approximately 20 5/8" width X 18 5/8" height

Overall Size:

Actual Filter Size – 31 3/4"w x 27 3/4" x 1"

12" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w28h28 Design – Rigid gauge ABS+ 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