Imperial 6 In. to 7 In. 24 Gauge Black Increaser is specifically designed for use with solid fuel appliances like wood stoves. Crafted from durable 24-gauge black steel, this increaser is compatible with single-wall pipe systems and allows you to seamlessly transition from a 6-inch diameter pipe to a larger 7-inch diameter pipe. The large end is crimped to ensure a secure and tight connection when joining the pipes, promoting improved airflow and efficient venting of exhaust gases produced by your wood stove. This increaser is an essential component for optimizing your wood stove installation and enhancing its performance. Model Number: BM0061