4” Double Wall Round Flue Pipe 4 Feet
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Dura-Vent Type B gas vent Pipe features our "no equal" twist-lock connections. Precision swedged fittings offer the contractor a superior positive-lock connection that is fast and easy to assemble. When necessary, the system may also be disconnected without damage to the product.
· HEAVY GAUGE ALUMINUM LINER provides fast warm-up for a quick, strong draft and corrosion resistance for safe, trouble-free performance.
· MALE & FEMALE ENDS ARE HEMMED to add structural integrity, preventing ovalization. Hemmed edges also eliminate sharp edges that can cause job site injuries. The inner liner is recessed to avoid damage in handling.
· DIE FORMED ENDS provide consistent fit, easy twist-lock assembly, and proper alignment.
· INVERSE BEADS add rigidity and ensure proper spacing between the inner liner and the outer wall. The inverse beads also serve to seal the air chamber between the inner and outer walls. As a result, the inner liner heats up rapidly and remains hot during the operation of the appliance, minimizing the effects of condensation