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DuraVent Type B Vent

4" Type B Firestop Spacer - 4GVFS

Item: COP68474
  • For Category 1 gas appliances
  • 1" clearance to combustibles
  • Easy-fit, twist-lock design with no fitting hassles
  • 0.012" aluminum inner
  • 0.018" galvanized outer

4" Type B Firestop Spacer - 4GVFS

This firestop spacer can help provide additional clearance from your venting to combustibles, ensuring better fire protection. Use at every ceiling level where Square Firestop Support is not used.

WARNING: Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer. For more information go to

Limited Lifetime Warranty