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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 8" x 3' 304 Stainless Steel Rigid Liner (2ZR321F0803)

    Z-Flex 8" x 3' 304 Stainless Steel Rigid Liner (2ZR321F0803)

    Z-Flex 8" x 3' 304 Stainless Steel Rigid Liner (2ZR321F0803)

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

    Regular Price: $115.20

    Special Price: $92.16

    Details
  2. Z-Flex 6" x 4' 304 Stainless Steel Rigid Liner (2ZR321F0604)

    Z-Flex 6" x 4' 304 Stainless Steel Rigid Liner (2ZR321F0604)

    Z-Flex 6" x 4' 304 Stainless Steel Rigid Liner (2ZR321F0604)

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

    Regular Price: $114.78

    Special Price: $91.83

    Details
  3. Z-Flex 7" x 3' 304 Stainless Steel Rigid Liner (2ZR321F0703)

    Z-Flex 7" x 3' 304 Stainless Steel Rigid Liner (2ZR321F0703)

    Z-Flex 7" x 3' 304 Stainless Steel Rigid Liner (2ZR321F0703)

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

    Regular Price: $103.53

    Special Price: $82.83

    Details
  4. Z-Flex 5" x 4' 304 Stainless Steel Rigid Liner (2ZR321F0504)

    Z-Flex 5" x 4' 304 Stainless Steel Rigid Liner (2ZR321F0504)

    Z-Flex 5" x 4' 304 Stainless Steel Rigid Liner (2ZR321F0504)

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

    Regular Price: $100.14

    Special Price: $80.11

    Details
  5. Z-Flex 6" x 3' 304 Stainless Steel Rigid Liner (2ZR321F0603)

    Z-Flex 6" x 3' 304 Stainless Steel Rigid Liner (2ZR321F0603)

    Z-Flex 6" x 3' 304 Stainless Steel Rigid Liner (2ZR321F0603)

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

    Regular Price: $91.49

    Special Price: $73.20

    Details
  6. Z-Flex 10" x 2' 304 Stainless Steel Rigid Liner (2ZR321F1002)

    Z-Flex 10" x 2' 304 Stainless Steel Rigid Liner (2ZR321F1002)

    Z-Flex 10" x 2' 304 Stainless Steel Rigid Liner (2ZR321F1002)

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

    Regular Price: $89.95

    Special Price: $71.97

    Details
  7. Z-Flex 9" x 2' 304 Stainless Steel Rigid Liner (2ZR321F0902)

    Z-Flex 9" x 2' 304 Stainless Steel Rigid Liner (2ZR321F0902)

    Z-Flex 9" x 2' 304 Stainless Steel Rigid Liner (2ZR321F0902)

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

    Regular Price: $83.77

    Special Price: $67.02

    Details
  8. Z-Flex 10" x 1' 304 Stainless Steel Rigid Liner (2ZR321F1001)

    Z-Flex 10" x 1' 304 Stainless Steel Rigid Liner (2ZR321F1001)

    Z-Flex 10" x 1' 304 Stainless Steel Rigid Liner (2ZR321F1001)

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

    Regular Price: $83.56

    Special Price: $66.85

    Details
  9. Z-Flex 8" x 2' 304 Stainless Steel Rigid Liner (2ZR321F0802)

    Z-Flex 8" x 2' 304 Stainless Steel Rigid Liner (2ZR321F0802)

    Z-Flex 8" x 2' 304 Stainless Steel Rigid Liner (2ZR321F0802)

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

    Regular Price: $81.96

    Special Price: $65.56

    Details
  10. Z-Flex 5" x 3' 304 Stainless Steel Rigid Liner (2ZR321F0503)

    Z-Flex 5" x 3' 304 Stainless Steel Rigid Liner (2ZR321F0503)

    Z-Flex 5" x 3' 304 Stainless Steel Rigid Liner (2ZR321F0503)

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

    Regular Price: $80.81

    Special Price: $64.64

    Details

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