Bernard Dalsin Insulated Flue Thimble, 6"
Insul Flue® provides security and protection for thru-the- wall stovepipe installations. Insul Flue® actually protects the wall on both sides when the chimney is not adjacent to the house wall. Insul Flue® reduces the minimum 18" clearance specified by NFPA standard to 2". This unique system can be used with both single wall and double wall connector pipe.