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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 3" to 4" Insul-Vent Increaser (2ZIC314)

    Z-Flex 3" to 4" Insul-Vent Increaser (2ZIC314)

    Z-Flex 3" to 4" Insul-Vent Increaser (2ZIC314)

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

    Regular Price: $42.37

    Special Price: $33.90

    Details
  2. Z-Flex Z-Dens 2" Eccentric Increaser - 2" to 3" - White (2ZDI23)

    Z-Flex Z-Dens 2" Eccentric Increaser - 2" to 3" - White (2ZDI23)

    Z-Flex Z-Dens 2" Eccentric Increaser - 2" to 3" - White (2ZDI23)

    Single Walled. Can be cut to length Learn More

    Regular Price: $42.87

    Special Price: $34.29

    Details
  3. Z-Flex Z-Dens 4" Concentric Increaser - White (2ZDI44)

    Z-Flex Z-Dens 4" Concentric Increaser - White (2ZDI44)

    Z-Flex Z-Dens 4" Concentric Increaser - White (2ZDI44)

    Single Walled. Can be cut to length Learn More

    Regular Price: $50.12

    Special Price: $40.09

    Details
  4. Z-Flex Z-Dens 4" Concentric Increaser - 4" to 6" - White (2ZDI46)

    Z-Flex Z-Dens 4" Concentric Increaser - 4" to 6" - White (2ZDI46)

    Z-Flex Z-Dens 4" Concentric Increaser - 4" to 6" - White (2ZDI46)

    Single Walled. Can be cut to length Learn More

    Regular Price: $50.12

    Special Price: $40.09

    Details
  5. Z-Flex 3" to 4" Stainless Steel Increaser (2IN3I4X)

    Z-Flex 3" to 4" Stainless Steel Increaser (2IN3I4X)

    Z-Flex 3" to 4" Stainless Steel Increaser (2IN3I4X)

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

    Regular Price: $56.50

    Special Price: $45.20

    Details
  6. Z-Flex Z-Dens 3" Eccentric Increaser - 3" to 4" - White (2ZDI34)

    Z-Flex Z-Dens 3" Eccentric Increaser - 3" to 4" - White (2ZDI34)

    Z-Flex Z-Dens 3" Eccentric Increaser - 3" to 4" - White (2ZDI34)

    Single Walled. Can be cut to length Learn More

    Regular Price: $61.19

    Special Price: $48.96

    Details
  7. Z-Flex 4" to 5" Stainless Steel Increaser (2IN4I5X)

    Z-Flex 4" to 5" Stainless Steel Increaser (2IN4I5X)

    Z-Flex 4" to 5" Stainless Steel Increaser (2IN4I5X)

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

    Regular Price: $62.80

    Special Price: $50.24

    Details
  8. Z-Flex Z-Vent 3" to 4" Increaser Stainless Steel Venting (2SVSI0304)

    Z-Flex Z-Vent 3" to 4" Increaser Stainless Steel Venting (2SVSI0304)

    Z-Flex Z-Vent 3" to 4" Concentric Increaser (2SVSI0304)

    Single Wall Stainless Steel, Category III Venting Learn More

    Regular Price: $67.01

    Special Price: $53.60

    Details
  9. Z-Flex Z-Vent 3" to 4" Eccentric Increaser Stainless Steel Venting (2SVSIE0304)

    Z-Flex Z-Vent 3" to 4" Eccentric Increaser Stainless Steel Venting (2SVSIE0304)

    Z-Flex Z-Vent 3" to 4" Eccentric Increaser (2SVSIE0304)

    Single Wall Stainless Steel, Category III Venting Learn More

    Regular Price: $67.02

    Special Price: $53.62

    Details
  10. Z-Flex 5" to 6" Stainless Steel Increaser (2IN5I6X)

    Z-Flex 5" to 6" Stainless Steel Increaser (2IN5I6X)

    Z-Flex 5" to 6" Stainless Steel Increaser (2IN5I6X)

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

    Regular Price: $69.10

    Special Price: $55.29

    Details

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Application
  1. Commercial,Residential (133)
Color
  1. White (8)
  2. Silver (125)
Material of Construction
  1. Stainless Steel (8)
  2. Stainless Steel AL29-4C (117)
  3. Polypropylene (8)
Price
  1. $0.00 - $999.99 (111)
  2. $1,000.00 - $1,999.99 (19)
  3. $2,000.00 and above (3)
Product Sub Type
  1. Concentric (3)
  2. Rigid (130)
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 5" Single-Wall Venting (2)
  5. Z-Dens 6" Single-Wall Venting (2)
  6. Z-Flex 3" Chimney Liner (1)
  7. Z-Flex 4" Chimney Liner (2)
  8. Z-Flex 5" Chimney Liner (1)
  9. Z-Flex 6" Chimney Liner (2)
  10. Z-Flex 7" Chimney Liner (1)
  11. Z-Flex 8" Chimney Liner (1)
  12. Z-Vent 3" Single-Wall Venting (4)
  13. Z-Vent 4" Single-Wall Venting (5)
  14. Z-Vent 5" Single-Wall Venting (5)
  15. Z-Vent 6" Single-Wall Venting (8)
  16. Z-Vent 7" Single-Wall Venting (7)
  17. Z-Vent 8" Single-Wall Venting (7)
  18. Z-Vent 9" Single-Wall Venting (2)
  19. Z-Vent 10" Single-Wall Vent (5)
  20. Z-Vent 12" Single-Wall Vent (7)
  21. Z-Vent 14" Single-Wall Vent (1)
  22. Z-Vent 16" Single-Wall Vent (3)
  23. Z-Vent 18" Single-Wall Vent (2)
  24. Z-Vent 20" Single-Wall Vent (2)
  25. Z-Vent 22" Single-Wall Vent (2)
  26. Z-Vent 3" Double-Wall Vent (2)
  27. Z-Vent 4" Double-Wall Vent (2)
  28. Z-Vent 5" Double-Wall Vent (3)
  29. Z-Vent 6" Double-Wall Vent (8)
  30. Z-Vent 7" Double-Wall Vent (5)
  31. Z-Vent 8" Double-Wall Vent (7)
  32. Z-Vent 9" Double-Wall Vent (1)
  33. Z-Vent 10" Double-Wall Vent (6)
  34. Z-Vent 12" Double-Wall Vent (6)
  35. Z-Vent 14" Double-Wall Vent (4)
  36. Z-Vent 16" Double-Wall Vent (8)
  37. Z-Vent 18" Double-Wall Vent (2)
  38. Z-Vent 20" Double-Wall Vent (2)
  39. Z-Vent 22" Double-Wall Vent (1)
Venting Style
  1. Z-Flex Chimney Liner (8)
  2. Z-Flex Z-Dens Polypropylene (8)
  3. Z-Flex Z-Vent Dble-Wall SS (57)
  4. Z-Flex Z-Vent Single-Wall SS (60)
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