DuraVent FasNSeal Flex: a flexible liner for an old masonry chimney
The DuraVent FasNSeal Flex is a flexible liner for carrying a gas appliance’s exhaust up an old masonry chimney. It can follow a slightly crooked chimney, but it must run straight up or nearly so, never sideways. FasNSeal Flex is DuraVent’s flexible stainless steel liner that carries a high efficiency gas appliance’s exhaust up through an existing masonry chimney. The liner is lowered in from the chimney top and stays within the masonry. Rigid FasNSeal parts extend beyond the chimney at both ends.
Choose a 2, 3, 4, 5, 6, 7, 8, 10, or 12 inch size, then a length for that size. The 2 through 8 inch sizes come in 20, 25, 30, 35, or 50 feet, except the 7 inch size stops at 35 feet. The 10 and 12 inch sizes come in 10 feet only. Need the connection at the liner’s lower end? See the DuraVent FasNSeal Male Flex Adapter for the bottom connection. The DuraVent FasNSeal Flex ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: FSVL603 | FSVL1203 | FSVL1803 | FSVL2403 | FSVL3603|
SKU: FSVL604 | FSVL1204 | FSVL1804 | FSVL2404 | FSVL3604
SKU: FSVL605 | FSVL1205 | FSVL1805 | FSVL2405 | FSVL3605
SKU: FSVL606 | FSVL1206 | FSVL1806 | FSVL2406 | FSVL3606
SKU: FSVL607 | FSVL1207 | FSVL1807 | FSVL2407 | FSVL3607
SKU: FSVL608 | FSVL1208 | FSVL1808 | FSVL2408 | FSVL3608
SKU: FSVL609 | FSVL1209 | FSVL1809 | FSVL2409 | FSVL3609
SKU: FSVL609 | FSVL1209 | FSVL1809 | FSVL2409 | FSVL3609
SKU: FSVL610 | FSVL1210 | FSVL1810 | FSVL2410 | FSVL3610
SKU: FSVL610 | FSVL1210 | FSVL1810 | FSVL2410 | FSVL3610
SKU: FSVL612 | FSVL1212 | FSVL1812 | FSVL2412 | FSVL3612
SKU: FSVL614 | FSVL1214 | FSVL1814 | FSVL2414 | FSVL3614
SKU: FSVL616 | FSVL1216 | FSVL1816 | FSVL2416 | FSVL3616
Applications
FasNSeal is 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 15″ (FasNSeal Flex 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.
Materials and Construction
3″–7″: 29-4C or 316L stainless steel .016″
8″–12″: 29-4C or 316L stainless steel .019″
14″–16″: 29-4C or 316L stainless steel .024″
Diameters
3″ – 16″
Listings
UL Listed to UL 1738 and ULC S636.