With this Standard Connection Tee Cover it's easy to protect your Dura-Vent Type B Gas Vent Connection Tee. Available in four diameters.
Applications - Simpson Dura-Vents Type B Gas Vent system is for use with natural gas or liquid propane category I and draft hood equipped appliances, and appliances tested and listed to use Type B Gas Vent for a wide range of applications, including: natural gas fireplaces, gasfired furnaces, boilers, water heaters, and wall or space heating applications.
Materials and Construction - Round Type B Gas Vent 3 - 8 and oval 4 - 6: Aluminum .012 inner wall, galvanized .018 outer wall. Round Type B Gas Vent 10 - 16: Aluminum .016 inner wall, galvanized .021 outer wall. Round Type B Gas Vent 18 - 30: aluminum .020 inner wall, galvanized .021 outer wall. 3-16 diameters feature twist-lock fittings, screws required for 18 and larger diameters.
Clearances - 1 clearance to combustibles in single and multi-family dwellings.
Listings - UL Listed to UL 441 and UL 1777 (MH6357). ULC Listed to ULC S605 (CMH1276 & CMH1407).
Simpson Duravent Item Number: 4GVTC

- Covers a 4" Dura-Vent Type B Gas Vent Standard Tee
- 25-year warranty

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Manual (PDF)