Pipe lengths provide the core part of the vent system. Pipes should match the inside diameter, should be from the same manufacturer. This DSP length is the ideal type to connect a wood burning appliance to a chimney system. For installed length, subtract 1.375 inch from the overall length of this pipe. Model DSP has an attractive outer black painted surface made of durable aluminized steel to withstand temperatures up to 1200degreeree Fahrenheit of continuous operation.