DuraTech Stainless Steel Galvalume Wall Thimble

This wall thimble adjusts from a minimum of 5 1/2" to a maximum of 9 1/2" wall thickness, and fits between standard wall studs. To accommodate thicker walls, the telescoping pieces can be extended up to 16" with a field-fabricated extension installed. Interior trim ring painted black. Must be installed with DuraTech chimney pipe horizontally through the wall and extend 6" into the room beyond the interior wall. Limited lifetime warranty. Shipping is FREE in the contiguous US. Approved for most fuel types 430-alloy stainless steel inner wall 2" clearance to combustibles ThermalTech blanket insulation eliminates hot spots Twist-lock connections for strong, secure fits Able to vent large fireplaces and building heating appliances Clean, smooth exterior finish WARNING: Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.