M&G Duravent : Ventinox

By: Protech Info  09-12-2011
Keywords: Gas, Stainless Steel, Masonry Chimney

VFT flexible liners are used for upgrading or restoring masonry chimneys that vent Category I natural gas, propane or oil appliances, wood or pellet stoves, fireplaces and fireplace inserts.

VG flexible liners are top performers when used to line masonry chimneys venting Category I gas-fired boilers, furnaces, space and water heaters. 

Materials and Construction

VFT Single-wall, .006” 316 stainless steel. Continuous weld delivers a strong, air and water tight flue gas conduit.

VG Single-wall, .006” super-ferritic stainless steel. Continuous weld construction.


VFT 0” clearance to masonry chimney for oil and gas.

With TherMix or ProFoil insulation 0” clearance for solid fuels.

VG 0” clearance to masonry for gas appliances.




UL Listed to UL 1777 and ULC S635 (MH11476).

Keywords: Gas, Masonry Chimney, Stainless Steel,

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Clearances 0" clearance to combustibles for exhaust temperatures up to 194°F / 90°C, and 0" clearance for vertical installations up to exhaust temperatures of 230°F / 110°C and 1/4" / 6mm clearance to combustibles for horizontal installations at exhaust temperatures up to 230°F / 110°C.


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For use with natural gas or propane Categories II, III and IV appliances or Canada's Type BH Gas Vent Systems, having a maximum rated operating temperature of 480°F and a maximum positive pressure of 6" water column. FasNSeal can be used on a wide range of applications including: high-efficiency gas boilers, furnaces, booster heaters, pool heaters, water heaters, unit heaters, or tankless water heaters. 8"-12": AL29-4C stainless steel .019.