8" X 6" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 18in diameter They seamlessly integrate into sheet

They seamlessly integrate into sheet rock plaster frame ceilings as well

actual front end outer dimensions are approximately 34 5/8" width X 30 5/8" height

+ Product Details Size - 4"w X 34"h is the size for the duct opening measurement only

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Actual Filter Size – 17 3/4"w x 15 3/4" x 1"

8" X 6" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 18in diameter They seamlessly integrate into sheet+ Product Details Size 8"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 875" width X 8" 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