Description
✫ Model Number 69W43 69W4301 LB-74940B LB74940B gas furnace flame sensor for many gas furnace models from top brands such as Lennox, Armstrong, and Ducane.✫ May be needed to address issues with gas furnace failing to remain lit, failing to heat, failing to heat properly, or failing to start.✫ Extends the service life of your gas furnace