Ultra Pro 316Ti Stainless Steel Chimney Relining Tee Kit 4" Diameter X 25' Length

4" x 25' Ultrapro Liner Kit

4" x 25' Ultrapro 316Ti Alloy Liner Kit, Includes 13x13 Collarplate With Band Connection, Collarplate Raincap With Band Connection And 3/4" Mesh, Tee With Removable 10" Take-off And Band Connection, Tee Cover.

When and Why should I Insulate?

Interior chimney location. Your chimney is not on an outside wall

The masonary chimney linning is cracked or missing.

A great reason to always use Insulation:  Insulation keeps flue gases warm, stabilizing draft for peak eficiency, and minimizing creasote and condensation problems.