ALLFUEL HST 6 in. x 12 in. Wall Thimble for Double Wall Chimney Pipe

The Wall Thimble is used for through-the-wall chimney installations. It protects the wall as the chimney passes safely through to the outside, and provides a finished look to the framed opening on the inside. The Wall Thimble can adjust to accommodate walls from 6 in. to 10 in. thick.

• Not compatible with other Class-A double wall chimney pipe brands
• 304 stainless steel construction ensures corrosion resistance
• Designed for continuous 1000° flue gas temperatures