16" X 10" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling with filter Actual Filter Size – 21

Actual Filter Size – 21 3/4"w x 27 3/4" x 1"

Actual Filter Size – 27 3/4"w x 5 3/4" x 1"

actual front end outer dimensions are approximately 36 5/8" width X 38 5/8" height

+ Product Details Size - 6"w X 14"h is the size for the duct opening measurement only

Actual Filter Size – 23 3/4"w x 29 3/4" x 1"

16" X 10" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling with filter Actual Filter Size – 21+ Product Details Size 16"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 875" width X 12" 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