The DuraVent 5GVX8 increaser is a fitting engineered to be used for your type B gas vent. This increaser is designed to be used to increase the vent diameter. It measures 5x8 inches in diameter and has a length of 6 inches. It is a UL-listed product and is covered by DuraVents limited lifetime warranty.Innovation and style has been the trademark of DuraVent throughout the years in the venting industry. Get one of their products here at PlumbersStock.com.
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