B-Vent Support Assembly Plates are designed for Category 1 gas-burning appliances, including furnaces, water heaters (HWT), boilers, pool heaters, unit heaters, gas fireplaces, and infrared tube heaters. These support plates are approved for Natural Gas (NG) and Propane (LP), offering reliable support and stability for venting systems. With a maximum temperature rating of 243°C (470°F), they ensure secure installation and long-lasting durability, maintaining the efficiency and safety of your heating system.