Duravent B-Vent 4" Firestop Spacer
$20.73
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Product Details 4" Firestop Spacer - New BV pipe, can be used with BV or GV pipe, adapter not required Use at every ceiling level where square firestop support is not used. DuraVent®'s Type B Gas Vent system. Use with NG or liquid propane category I and draft hood equipped appliances, and appliances tested and listed to use Type B Gas Vent. Applications include: NG fireplaces, gas-fired furnaces, boilers, water heaters, and wall or space heating applications.
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$18.11
$20.73
(+$2.62)