Majestic DVP is used on Majestic gas fireplaces. Majetic DVP Venting is a direct vent pipe built by Hearth and Home Technologies (HHT). and is used with the current model Vermont Castings, Heatilator, Heat-n-Glo and Majestic Stoves and Fireplaces. This vent system uses a coaxial system (a small pipe within a larger pipe) to both vent exhaust gases and draw air from outside the home to aid combustion. Direct vent pipe offers very high efficiency and is great for newer, air-tight homes.