12" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 18" Diameter 85" width X 19

85" width X 19

but you’ll appreciate the benefits over a long period of time

Easy Installation – Complete set of sponge gasket and mounting frame included

Quality Packaging – carefully shrink wrapped with cardboard backing to prevent damage in shipment

Actual Filter Size – 23 3/4"w x 31 3/4" x 1"

12" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 18" Diameter 85" width X 19+ 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