DuraVent 4in. Firestop Spacer

<p>Simpson DuraVent's Type B Gas Vent system. Use with natural gas or liquid propane category I and drafthood equipped appliances, and appliances tested and listed to use Type B Gas Vent. Applications include: natural gas fireplaces, gas-fired furnaces, boilers, water heaters, and wall or space heating applications.<br><br>Type B Gas Vent has been engineered to heat up rapidly. It remains hot during the operation of the appliance with minimal condensation on the appliance and vent system. Simpson DuraVent Type B Gas Vent is designed to meet the rugged demands of the job site. The inner wall is recessed to eliminate damage in handling.</p><b>Specifications</b><ul><li>Diameter: 4"</li><li>Depth: 8.75</li><li>Fuel Type: Gas, Liquid Propane</li><li>Material: Aluminum</li><li>Pipe Class: Type B</li><li>Pipe Shape: Round</li><li>UL Listed: Yes</li><li>Vent Construction: Double Wall</li><li>Width: 8.75</li></ul><b>Features</b><ul><li>Use at every ceiling level where Square Firestop Support is not used.</li><li>Configuration: Shield</li><li>Theme: Modern</li></ul>- SKU: TWST3596