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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Z-Flex Z-Dens 4" Concentric Increaser - 4" to 6" - White (2ZDI46)
Single Walled. Can be cut to length
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Regular Price:
$50.12
Special Price:
$40.09
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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
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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
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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
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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
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Z-Flex Z-Vent 3" to 4" Concentric Increaser (2SVSI0304)
Single Wall Stainless Steel, Category III Venting
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Regular Price:
$67.01
Special Price:
$53.60
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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
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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
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Z-Flex 6" to 7" Stainless Steel Increaser (2IN6I7X)
For Use with Category I Natural-Draft Gas-Fired Heating Equipment and Gas Fireplaces
Learn More
Regular Price:
$75.39
Special Price:
$60.32
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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
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Z-Flex Z-Vent 4" to 5" Eccentric Increaser (2SVSIE0405)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$79.73
Special Price:
$63.78
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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
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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
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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
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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
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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
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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
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Z-Flex Z-Dens 6" Concentric Adaptor (2ZDA6)
Single Walled. Can be cut to length
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Regular Price:
$98.56
Special Price:
$78.84
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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
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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
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Z-Flex Z-Vent 3" to 5" Concentric Increaser (2SVDI0305)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$137.00
Special Price:
$109.60
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Z-Flex Z-Dens 5" Eccentric Increaser - 5" to 4" - White (2ZDI45)
Single Walled. Can be cut to length
Learn More
Regular Price:
$144.56
Special Price:
$115.64
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Z-Flex Z-Vent 4" to 8" Concentric Increaser (2SVSI0408)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$157.39
Special Price:
$125.91
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Z-Flex Z-Vent 5" to 6" Eccentric Increaser (2SVSIE0506)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$166.82
Special Price:
$133.46
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Z-Flex Z-Vent 5" to 6" Concentric Increaser (2SVSI0506)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$166.84
Special Price:
$133.47
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Z-Flex Z-Vent 4" to 5" Concentric Increaser (2SVDI0405)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$168.42
Special Price:
$134.73
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Z-Flex Z-Vent 4" to 6" Concentric Increaser (2SVDI0406)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$178.77
Special Price:
$143.01
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Z-Flex Z-Vent 5" to 7" Eccentric Increaser (2SVSIE0507)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$190.65
Special Price:
$152.52
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Z-Flex Z-Vent 6" to 7" Eccentric Increaser (2SVSIE0607)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$190.65
Special Price:
$152.52
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Z-Flex Z-Vent 6" to 7" Concentric Increaser (2SVSI0607)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$190.67
Special Price:
$152.54
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Z-Flex Z-Vent 5" to 7" Concentric Increaser (2SVSI0507)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$190.67
Special Price:
$152.54
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Z-Flex Z-Dens 5" Eccentric Increaser - 5" to 4" - White (2ZDI56)
Single Walled. Can be cut to length
Learn More
Regular Price:
$194.87
Special Price:
$155.89
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Z-Flex Z-Vent 6" to 8" Eccentric Increaser (2SVSIE0608)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$214.48
Special Price:
$171.58
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Z-Flex Z-Vent 5" to 8" Concentric Increaser (2SVSI0508)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$214.48
Special Price:
$171.58
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Z-Flex Z-Vent 7" to 8" Eccentric Increaser (2SVSIE0708)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$214.48
Special Price:
$171.58
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Z-Flex Z-Vent 7" to 8" Concentric Increaser (2SVSI0708)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$214.48
Special Price:
$171.58
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Z-Flex Z-Vent 6" to 8" Concentric Increaser (2SVSI0608)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$214.50
Special Price:
$171.59
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Z-Flex Z-Vent 6" to 9" Concentric Increaser (2SVSI0609)
Single Wall Stainless Steel, Category III Venting
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Regular Price:
$285.97
Special Price:
$228.78
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Z-Flex Z-Vent 5" to 6" Concentric Increaser (2SVDI0506)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$285.99
Special Price:
$228.79
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Z-Flex Z-Vent 7" to 10" Concentric Increaser (2SVSI0710)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$285.99
Special Price:
$228.79
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Z-Flex Z-Vent 8" to 9" Concentric Increaser (2SVSI0809)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$285.99
Special Price:
$228.79
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Z-Flex Z-Vent 8" to 10" Eccentric Increaser (2SVSIE0810)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$285.99
Special Price:
$228.79
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Z-Flex Z-Vent 7" to 9" Eccentric Increaser (2SVSIE0709)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$285.99
Special Price:
$228.79
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Z-Flex Z-Vent 8" to 10" Concentric Increaser (2SVSI0810)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$285.99
Special Price:
$228.79
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Z-Flex Z-Vent 7" to 9" Concentric Increaser (2SVSI0709)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$286.01
Special Price:
$228.80
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Z-Flex Z-Vent 6" to 7" Eccentric Increaser (2SVDIE0607)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$312.80
Special Price:
$250.24
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Z-Flex Z-Vent 6" to 7" Concentric Increaser (2SVDI0607)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$312.82
Special Price:
$250.25
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Z-Flex Z-Dens 6" Eccentric Increaser - 6" to 8" - White (2ZDI68)
Single Walled. Can be cut to length
Learn More
Regular Price:
$325.71
Special Price:
$260.57
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Z-Flex Z-Vent 6" to 10" Concentric Increaser (2SVSI0610)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$333.66
Special Price:
$266.93
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Z-Flex Z-Vent 6" to 10" Eccentric Increaser (2SVSIE0610)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$334.21
Special Price:
$267.36
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Z-Flex Z-Vent 7" to 8" Concentric Increaser (2SVDI0708)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$347.56
Special Price:
$278.06
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Z-Flex Z-Vent 7" to 8" Eccentric Increaser (2SVDIE0708)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$347.56
Special Price:
$278.06
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Z-Flex Z-Vent 6" to 8" Eccentric Increaser (2SVDIE0608)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$365.64
Special Price:
$292.51
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Z-Flex Z-Vent 9" to 10" Concentric Increaser (2SVSI0910)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$366.08
Special Price:
$292.86
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Z-Flex Z-Vent 9" to 10" Eccentric Increaser (2SVSIE0910)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$366.08
Special Price:
$292.86
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Z-Flex Z-Vent 7" to 12" Eccentric Increaser (2SVSIE0712)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$381.32
Special Price:
$305.05
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Z-Flex Z-Vent 10" to 12" Concentric Increaser (2SVSI1012)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$381.32
Special Price:
$305.05
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Z-Flex Z-Vent 10" to 12" Eccentric Increaser (2SVSIE1012)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$381.32
Special Price:
$305.05
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Z-Flex Z-Vent 8" to 12" Eccentric Increaser (2SVSIE0812)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$381.32
Special Price:
$305.05
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Z-Flex Z-Vent 7" to 12" Concentric Increaser (2SVSI0712)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$381.32
Special Price:
$305.05
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Z-Flex Z-Vent 8" to 12" Concentric Increaser (2SVSI0812)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$381.33
Special Price:
$305.07
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Z-Flex Z-Vent 5" to 7" Concentric Increaser (2SVDI0507)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$393.23
Special Price:
$314.58
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Z-Flex Z-Vent 8" to 14" Concentric Increaser (2SVSI0814)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$406.87
Special Price:
$325.50
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Z-Flex Z-Vent 6" to 8" Concentric Increaser (2SVDI0608)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$417.07
Special Price:
$333.66
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Z-Flex Z-Vent 12" to 14" Concentric Increaser (2SVSI1214)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$428.98
Special Price:
$343.19
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Z-Flex Z-Vent 12" to 14" Eccentric Increaser (2SVSIE1214)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$428.98
Special Price:
$343.19
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Z-Flex Z-Vent 10" to 14" Concentric Increaser (2SVSI1014)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$428.98
Special Price:
$343.19
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Z-Flex Z-Vent 10" to 14" Eccentric Increaser (2SVSIE1014)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$428.98
Special Price:
$343.19
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Z-Flex Z-Vent 6" to 12" Concentric Increaser (2SVSI0612)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$428.98
Special Price:
$343.19
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Z-Flex Z-Vent 8" to 14" Eccentric Increaser (2SVSIE0814)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$444.87
Special Price:
$355.90
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Z-Flex Z-Vent 10" to 16" Concentric Increaser (2SVSI1016)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$476.65
Special Price:
$381.33
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Z-Flex Z-Vent 12" to 16" Eccentric Increaser (2SVSIE1216)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$476.65
Special Price:
$381.33
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Z-Flex Z-Vent 14" to 16" Eccentric Increaser (2SVSIE1416)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$476.68
Special Price:
$381.34
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Z-Flex Z-Vent 12" to 16" Concentric Increaser (2SVSI1216)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$476.68
Special Price:
$381.34
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Z-Flex Z-Vent 5" to 8" Concentric Increaser (2SVDI0508)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$500.48
Special Price:
$400.38
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Z-Flex Z-Vent 9" to 10" Concentric Increaser (2SVDI0910)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$533.86
Special Price:
$427.10
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Z-Flex Z-Vent 12" to 18" Concentric Increaser (2SVSI1218)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$536.44
Special Price:
$429.16
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Z-Flex Z-Vent 6" to 10" Eccentric Increaser (2SVDIE0610)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$551.91
Special Price:
$441.53
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Z-Flex Z-Vent 16" to 18" Eccentric Increaser (2SVSIE1618)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$577.14
Special Price:
$461.71
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Z-Flex Z-Vent 12" to 20" Concentric Increaser (2SVSI1220)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$596.08
Special Price:
$476.86
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Z-Flex Z-Vent 18" to 20" Eccentric Increaser (2SVSIE1820)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$601.74
Special Price:
$481.39
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Z-Flex Z-Vent 18" to 20" Concentric Increaser (2SVSI1820)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$601.74
Special Price:
$481.39
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Z-Flex Z-Vent 10" to 12" Concentric Increaser (2SVDI1012)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$624.88
Special Price:
$499.89
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Z-Flex Z-Vent 6" to 10" Concentric Increaser (2SVDI0610)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$625.62
Special Price:
$500.49
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Z-Flex Z-Vent 12" to 14" Concentric Increaser (2SVDI1214)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$625.62
Special Price:
$500.49
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Z-Flex Z-Vent 7" to 10" Concentric Increaser (2SVDI0710)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$635.71
Special Price:
$508.56
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Z-Flex Z-Vent 12" to 22" Concentric Increaser (2SVSI1222)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$655.68
Special Price:
$524.55
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Z-Flex Z-Vent 7" to 12" Concentric Increaser (2SVDI0712)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$735.25
Special Price:
$588.20
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Z-Flex Z-Vent 12" to 14" Eccentric Increaser (2SVDIE1214)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$758.30
Special Price:
$606.64
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Z-Flex Z-Vent 12" to 16" Eccentric Increaser (2SVDIE1216)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$758.30
Special Price:
$606.64
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Z-Flex Z-Vent 22" to 24" Concentric Increaser (2SVSI2224)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$760.69
Special Price:
$608.56
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Z-Flex Z-Vent 22" to 24" Eccentric Increaser (2SVSIE2224)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$760.69
Special Price:
$608.56
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Z-Flex Z-Vent 10" to 14" Concentric Increaser (2SVDI1014)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$764.62
Special Price:
$611.70
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Z-Flex Z-Vent 16" to 18" Concentric Increaser (2SVSI1618)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$786.50
Special Price:
$629.20
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Z-Flex Z-Vent 16" to 20" Concentric Increaser (2SVSI1620)
Single Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$821.58
Special Price:
$657.27
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Z-Flex Z-Vent 7" to 12" Eccentric Increaser (2SVDIE0712)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$827.87
Special Price:
$662.30
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Z-Flex Z-Vent 10" to 12" Eccentric Increaser (2SVDIE1012)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$827.87
Special Price:
$662.30
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Z-Flex Z-Vent 6" to 12" Eccentric Increaser (2SVDIE0612)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$834.14
Special Price:
$667.32
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Z-Flex Z-Vent 6" to 12" Concentric Increaser (2SVDI0612)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$834.14
Special Price:
$667.32
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Z-Flex Z-Vent 12" to 16" Concentric Increaser (2SVDI1216)
Double Wall Stainless Steel, Category III Venting
Learn More
Regular Price:
$834.14
Special Price:
$667.32