If the vacuum exceeds 1

For precise field calibration

and HS26-042-03 series units

this specific part is manufactured with a 1/2" bore

and 10 psi springs to satisfy diverse HVAC control sequences

Lennox 56W61 Ignitor Els PW 17895 If the vacuum exceeds 1The Lennox 56W61 Hot Surface Ignitor is a high performance 120V silicon nitride ignitor designed for precision ignition in residential and commercial Lennox gas furnaces. Engineered to replace fragile older models, this genuine OEM furnace igniter features a robust Coorstek R100997 02 design with a durable protective cage, ensuring reliable combustion under demanding cycles. As a critical component for heat initiation, the 56W61 ignitor provides a