Box Damper Only 4 Inch Wide Standard Sizes

Box Damper Only 4 Inch Wide Standard Sizes by Grill Works


Box Damper vent control Only 4 Inch Standard Sizes including 4" x 8", 4" x 10", 4" x 12" and 4" x 14"

  • Metal Box Damper for Vent Control in 4" wide sizes
  • Made in the U.S.A.
  • Can adapt to a grill or vent that does not already include a damper
  • Some states like MN now require a damper control on every vent for new construction
  • Designed to fit between grill/vent cover and standard sized vent openings 4" wide
  • Originally designed to attach to actual grill cover
  • Could be fastened directly into subfloor cavity as well
  • Control lever is designed to be accessible through a louver in the vent cover

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