- Free-floating inner 430-alloy liner maintains structural integrity in chimney fires
- Limited Lifetime Warranty
- Use when air-cooled chimney is required
- 2" clearance to combustibles
- UL listed to 103HT
- OD 4" Larger than ID
Supports up to 40' of DuraPlus. Includes a twist-lock starter section and is 24" tall, with a 1-1/2" trim piece. Framing requirements are 14-1/2" x 14-1/2".