Manufacturer Name: Lennox Product Number: 23C48 OEM Part Number: 23C48 Product Description: Ignition Control Hsi Weight:0.73lbs/331.12g The Lennox 23C48 Ignition-Control HSI is a part of your Lennox gas furnace or boiler’s heating system. It uses hot surface ignition-technology to ignite the gas that makes it easy to heat the gas in the process. When your-thermostat calls for h... https://www.partshnc.com/23c48-lennox-ignition-control-hsi