The inner liner of model DSP is made from corrosion resistant 400 series stainless steel
Pipe is adjustable from 12-in - 18-in
Used to adjust pipe to desired length
Double wall stove pipe not only keeps the flue temperatures higher, it keeps the outer pipe temperatures cooler, can be installed with only 6 In. clearance to combustible materials. single wall stove pipe requires an 18 In. clearance