Chimney Extension - Insulated 8" x 24"

The Polar Vortex Is Back - 25% OFF on all items! Don’t Risk Losing Heat   Don’t wait until the cold hits hard. Protect your heat system and stay warm with our biggest savings of the season. Stay ready. Stay warm.   Sale ends December 11 — shop now before it’s gone.   Chimney Extension - Insulated 8" x 24". This product meets specifications for all HE, GH, and BHS model furnaces. (NOTE: This 8" size will NOT fit GX model furnaces.) This Chimney Extension also meets specifications for any indoor wood stove or other chimney extention needed that requires an 8" diameter.  Note that these products also feature the Selkirk "Snap Lok" at both ends (female at bottom, male at top). Also NOTE: A "Chimney Extension Adapter - 8"" is required to attach this extension to any HE, GH, or BHS model furnace. All Chimney extensions are shown by their INSIDE diameter and length. The outside diameter is always 2 inches wider. Accordingly, this product has an OD of 10". NEVER use an uninsulated chimney ext