12" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Copper Coil Actual Filter Size – 29

Actual Filter Size – 29 3/4"w x 13 3/4" x 1"

+ Product Details Size - 12"w X 26"h is the size for the duct opening measurement only

Actual Filter Size – 15 3/4"w x 27 3/4" x 1"

+ Product Details Size – 14"w X 4"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 18 5/8" width X 27 5/8" height

12" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Copper Coil Actual Filter Size – 29+ Product Details Size 12"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 875" width X 10" 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