Power up your fire pit using HPC’s 36″ Thermocouple Extension replacement for hot wire ignition (HWI) series. It is 36″ in length. PRODUCT FEATURES: Thermocouple Extension Replacement Part For Use with HPC Hot Wire Ignition (HWI) Series Made in the USA Dimensions: 36″ L HPC has partnered with BILT to provide you with an easy-to-use app that walks you through the installation process, and assists in troubleshooting of your new fire pit. You can download this app by searching for “BILT” in your app store (available for Android and iOS ).