20" X 18" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_R-8.0 Pink complete with a set of

complete with a set of sponge gasket and mounting frame

Actual Filter Size – 29 3/4"w x 17 3/4" x 1"

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

actual front end outer dimensions are approximately 16 5/8" width X 16 5/8" height

with an additional 1 7/8" width and 2" height

20" X 18" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_R-8.0 Pink complete with a set of+ Product Details Size 20"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 875" width X 20" 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