DuraVent DuraFlex 316 3" x 35' Stainless Steel Length w7.7 Designed for the Osburn 1700

Designed for the Osburn 1700 wood insert

Slim frame that features a large fireplace viewing area with life-like 3 color

Model 4MRO Application For use with category I natural gas-burning or propane-fired appliances such as gas boilers

this takes a long time and can cause a lot of new problems

Product Code Size 4644SS 6" Crimp / 4" Female Increaser/Reducer 4736SS 7" Crimp / 6" Female Increaser/Reducer

DuraVent DuraFlex 316 3" x 35' Stainless Steel Length w7.7 Designed for the Osburn 1700DuraFlex Pro DuraFlex Pro is the ultimate in flexible steel liners for strength and flexibility. It features 20% more stainless steel per foot compared to other liners on the market. Its extreme flexibility facilitates problem free installations where multiple offsets are needed. DuraFlex Pro is available in 3 through 12 diameters in lengths, kits and custom lengths. DuraFlex Pro is manufactured utilizing highly corrosion resistant 316 Stainless