DuraVent DuraTech Insulated Wall Thimble: an insulated sleeve for a warmer wall opening
The DuraVent DuraTech Insulated Wall Thimble is a sleeve for a chimney passing through an outside wall. Insulation fitted at the factory helps keep warmth from escaping through the air space a plain sleeve leaves open. It slides to fit walls 5 1/2 to 9 1/2 inches thick. A shop made extension accommodates walls up to 16 inches. The chimney passes horizontally through it and extends 6 inches into the room. DuraTech is DuraVent’s double wall chimney, an insulated pipe with a 1 inch wall that takes over from the stovepipe at the ceiling or wall and runs up past the roof.
Choose 5, 6, 7, or 8 inches to match your chimney and stove outlet. Inside trim is black, with stainless steel outside trim available for the 6 and 8 inch sizes. DuraTech pipe has an outer wall of galvalume, a coated steel, or stainless steel for weather exposure. Short black pipe lengths suit exposed indoor sections. Fixed lengths from 6 to 60 inches stack together, with adjustable pipe filling the final gap. Don’t need insulation? See the DuraVent DuraTech Wall Thimble plain sleeve. The DuraVent DuraTech Insulated Wall Thimble ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.








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