The DuraVent 5DT-RRS is a roof radiation shield that will fit your all-fuel chimney. This is installed where a chimney passes through a roof. Coming from the DuraTech collection, it features lightweight insulation and twist-lock fittings for easy installation. It measures 9 inches in diameter and 15 inches in height. It is a UL-listed product and is covered by DuraVents limited lifetime warranty. Having achieved to become the technological leader in the venting industry, DuraVent continues to provide excellent and high-quality products for its customers. Get these products only here at PlumbersStock.com!