Selkirk 6" to 8" Flush Stove Adaptor (Double Wall Stove Pipe - DSP)Selkirk 6" to 8" Flush Stove Adaptor Used to adapt Double Wall Stove Pipe to stoves with recessed flue outlets. Stainless Steel inner liner extends past stove top to make a secure connection. DSP Double Wall Stove PipeClose clearance, double wall connector used to connect a gas, liquid or solid fuel burning appliance to a chimney. DSP's better insulating value means superior stove performance. 6" to 8" Diameter: 430 Stainless Steel Inner Liner