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Bosch Therm gas and propane tankless water heaters and Bosch Powerstream electric tankless water heaters.

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Z-Flex

Z-Flex Z-Vent Stainless Steel Venting is the perfect choice for tankless water heaters and boilers. Z-Flex Z-Vent is rated AL29-4C and is approved for Category I (vertical only), II, III & IV applications and is designed for use with boilers, high efficiency gas and oil heaters and water heaters where cool flue gases are vented under pressure. Z-Vent contains a built-in, fail-safe gasket and locking band connection. No sealant is required.

Z-Flex Z-Dens Polypropylene vent pipe is ULC S636 certified for use with high efficiency condensing oil and gas fired heating appliances having flue gas temperatures up to 230°F (110°C). Specially developed, fire retardant Polypropylene. Cat II, IV Special Gas Vent. Gas Vent BH, Class IIc. Suitable for use with negative and positive pressure appliances.

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  1. Z-Flex Z-Vent 3" to 4" Concentric Increaser Stainless Steel Venting (2SVDI0304)

    Z-Flex Z-Vent 3" to 4" Concentric Increaser (2SVDI0304)

    Z-Flex Z-Vent 3" to 4" Concentric Increaser (2SVDI0304)

    Double Wall Stainless Steel, Category III Venting Learn More

    Regular Price: $117.56

    Special Price: $94.06

    Details
  2. Z-Flex 8" to 10" Stainless Steel Increaser (2IN8I10X)

    Z-Flex 8" to 10" Stainless Steel Increaser (2IN8I10X)

    Z-Flex 8" to 10" Stainless Steel Increaser (2IN8I10X)

    For Use with Category I Natural-Draft Gas-Fired Heating Equipment and Gas Fireplaces Learn More

    Regular Price: $98.81

    Special Price: $79.05

    Details
  3. Z-Flex Z-Dens 6" Concentric Adaptor (2ZDA6)

    Z-Flex Z-Dens 6" Concentric Adaptor (2ZDA6)

    Z-Flex Z-Dens 6" Concentric Adaptor (2ZDA6)

    Single Walled. Can be cut to length Learn More

    Regular Price: $98.56

    Special Price: $78.84

    Details
  4. Z-Flex Z-Vent 4" to 6" Increaser Stainless Steel Venting (2SVSI0406)

    Z-Flex Z-Vent 4" to 6" Increaser Stainless Steel Venting (2SVSI0406)

    Z-Flex Z-Vent 4" to 6" Concentric Increaser (2SVSI0406)

    Single Wall Stainless Steel, Category III Venting Learn More

    Regular Price: $95.68

    Special Price: $76.54

    Details
  5. Z-Flex Z-Vent 4" to 6" Increaser Stainless Steel Venting (2SVSIE0406)

    Z-Flex Z-Vent 4" to 6" Increaser Stainless Steel Venting (2SVSIE0406)

    Z-Flex Z-Vent 4" to 6" Eccentric Increaser (2SVSIE0406)

    Single Wall Stainless Steel, Category III Venting Learn More

    Regular Price: $95.68

    Special Price: $76.54

    Details
  6. Z-Flex 7" to 8" Stainless Steel Increaser (2IN7I8X)

    Z-Flex 7" to 8" Stainless Steel Increaser (2IN7I8X)

    Z-Flex 7" to 8" Stainless Steel Increaser (2IN7I8X)

    For Use with Category I Natural-Draft Gas-Fired Heating Equipment and Gas Fireplaces Learn More

    Regular Price: $90.06

    Special Price: $72.05

    Details
  7. Z-Flex 6" to 8" Stainless Steel Increaser (2IN6I8X)

    Z-Flex 6" to 8" Stainless Steel Increaser (2IN6I8X)

    Z-Flex 6" to 8" Stainless Steel Increaser (2IN6I8X)

    For Use with Category I Natural-Draft Gas-Fired Heating Equipment and Gas Fireplaces Learn More

    Regular Price: $81.68

    Special Price: $65.35

    Details
  8. Z-Flex Z-Vent 4" to 5" Increaser Stainless Steel Venting (2SVSI0405)

    Z-Flex Z-Vent 4" to 5" Increaser Stainless Steel Venting (2SVSI0405)

    Z-Flex Z-Vent 4" to 5" Concentric Increaser (2SVSI0405)

    Single Wall Stainless Steel, Category III Venting Learn More

    Regular Price: $79.74

    Special Price: $63.80

    Details
  9. Z-Flex Z-Vent 3" to 5" Increaser Stainless Steel Venting (2SVSI0305)

    Z-Flex Z-Vent 3" to 5" Increaser Stainless Steel Venting (2SVSI0305)

    Z-Flex Z-Vent 3" to 5" Concentric Increaser (2SVSI0305)

    Single Wall Stainless Steel, Category III Venting Learn More

    Regular Price: $79.74

    Special Price: $63.80

    Details
  10. Z-Flex Z-Vent 3" to 5" Eccentric Increaser Stainless Steel Venting (2SVSIE0305)

    Z-Flex Z-Vent 3" to 5" Eccentric Increaser Stainless Steel Venting (2SVSIE0305)

    Z-Flex Z-Vent 3" to 5" Eccentric Increaser (2SVSIE0305)

    Single Wall Stainless Steel, Category III Venting Learn More

    Regular Price: $79.73

    Special Price: $63.78

    Details

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Application
  1. Commercial,Residential (22)
Color
  1. White (5)
  2. Silver (17)
Material of Construction
  1. Stainless Steel (8)
  2. Stainless Steel AL29-4C (9)
  3. Polypropylene (5)
Product Sub Type
  1. Concentric (3)
  2. Rigid (19)
Product Type
  1. Z-Dens 2" Single-Wall Venting (1)
  2. Z-Dens 3" Single-Wall Venting (1)
  3. Z-Dens 4" Single-Wall Venting (2)
  4. Z-Dens 6" Single-Wall Venting (1)
  5. Z-Flex 3" Chimney Liner (1)
  6. Z-Flex 4" Chimney Liner (2)
  7. Z-Flex 5" Chimney Liner (1)
  8. Z-Flex 6" Chimney Liner (2)
  9. Z-Flex 7" Chimney Liner (1)
  10. Z-Flex 8" Chimney Liner (1)
  11. Z-Vent 3" Single-Wall Venting (4)
  12. Z-Vent 4" Single-Wall Venting (4)
  13. Z-Vent 3" Double-Wall Vent (1)
Venting Style
  1. Z-Flex Chimney Liner (8)
  2. Z-Flex Z-Dens Polypropylene (5)
  3. Z-Flex Z-Vent Dble-Wall SS (1)
  4. Z-Flex Z-Vent Single-Wall SS (8)
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