DuraVent FasNSeal W2 Insulated Wall Thimble with Adjustable Vent Length: an insulated wall sleeve with room to adjust
The DuraVent FasNSeal W2 Insulated Wall Thimble with Adjustable Vent Length is an insulated double wall sleeve for taking a W2 vent through an outside wall. Its built in adjustable section makes up the extra inches without cutting W2 pipe, which must stay uncut. The insulation blocks cold air around the vent. FasNSeal W2 is DuraVent’s double wall stainless steel vent for high efficiency gas boilers, furnaces, and water heaters, with an air space between its two walls.
Choose a 3 to 16 inch size. The 3 to 5 inch sizes fit walls 4 1/4 to 8 1/2 inches thick. Larger sizes fit walls 5 3/4 to 11 1/2 inches thick. W2 can be as close as 1 inch to materials that can burn, depending on the appliance’s exhaust temperature and whether the vent is exposed or boxed in. It also allows outdoor runs below the roof line without an enclosure. Need the single wall sleeve? See the DuraVent FasNSeal Insulated Wall Thimble with Adjustable Vent Length. The DuraVent FasNSeal W2 Insulated Wall Thimble with Adjustable Vent Length ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.








Commercial projects may require custom parts and unique system designs. Duravent offers complete project assistance:








































