DuraVent DuraLiner 6" Oval Spacer spectrum FLEXFRAME-SS3 Dimensions 44" x 6-1/4"

FLEXFRAME-SS3 Dimensions 44" x 6-1/4" x 1-3/16" (Per Piece)

The 18”-24” diameters are listed in the US to UL 103

we recommend using a glass wind guard

Mason-Lite 14" Inner Liner (Individual) MCL-814

DuraVent DuraLiner 6" Oval Spacer spectrum FLEXFRAME-SS3 Dimensions 44" x 6-1/4"DuraLiner ensures safe and efficient venting of heating appliances while protecting the masonry chimney from the damaging effects of flue gas. It is the only factory insulated product with zero zero clearance for high heat wood burning appliances. No need to uncoil flex, insulate a majority of the pipe, or protect the insulation when installing. A smooth inner means less creosote buildup. Installers reduce labor time by 50% or more with DuraLiner. No