The support is specifically designed for use with Dura-Vent Type B gas vent pipe with a 3 inch inner diameter. The installation straps each measure 16 inches long, a support clamp is included, and the support itself provides 1 inch of clearance to combustible materials. Your pipes will be locked in place at the ceiling level, plus your peace of mind will be locked in place thanks to the 25 year limited warranty this Dura-Vent Type B Firestop Support provides.
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