8" x 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 14in diameter This versatile guard features air

This versatile guard features air circulating ports on all four sides to allow proper airflow

+ Product Details Size - 4"w X 28"h is the size for the duct opening measurement only

Actual Filter Size – 33 3/4"w x 9 3/4" x 1"

Actual Filter Size – 19 3/4"w x 21 3/4" x 1"

Design – This airflow control component are made to connect to a drop ceiling lay-in diffuser grille

8" x 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 14in diameter This versatile guard features air+ Product Details Size 8"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 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