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DuraVent Type B Gas Vent Increaser
The Chimney Doctor Shop

DuraVent Type B Gas Vent Increaser

Regular price $26.99 $0.00 Unit price per
DuraVent Type B Gas Vent Increaser
  • For Category 1 gas appliances. 
  • .012" aluminum inner
  • .018" galvanized outer
  • OD 5/8" larger than ID
  • 1" clearance to combustibles
  • Easy-fit, twist-lock design with no fitting hassles
  • Listed to UL 441 and ULC S605
  • Limited Lifetime Warranty