The search for vent support pieces never seems to end. The ventilation system for your Majestic fireplace or stove is complex, convoluted, and hard to maintain, but Majestic provides a full line of parts to help you prolong the life of your vent pipes. The Majestic DVP-HVS Horizontal Pipe Support--5 inch Diameter will help take some weight off your horizontal pipe. The 5-inch diameter is compatible with many common vent pipe lengths, and this particular support is intended for horizontal pipes. The unit is 10 lbs. and is designed to last just as long as the pipe it works to support.