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The HART & COOLEY 557880 is a 3-inch Type B gas vent gripper support plate made for double-wall, air-insulated B vent systems. This support plate consists of a galvanized steel outer pipe and an aluminum inner pipe, offering corrosion resistance. It keeps the vent system secured with locking joints, which helps prevent separation caused by vibration. The design supports negative pressure applications, accommodating flue gas temperatures up to four hundred degrees Fahrenheit above ambient for Category I appliances. Additionally, it serves as a firestop.
This support plate is designed for robust performance in gas vent applications.
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