Universal Compatibility: Designed to replace standard commercial gas pilot setups using a 1/4-inch or 3/16-inch pilot tube connection

featuring a Single Pole Single Throw (SPST) internal switch that breaks the circuit on a temperature rise

Featuring a robust 1 1/2" NPT connection

these models are technically identical in form

Resideo PS1201B25 Replacement Power Supply 320788-703 Universal Compatibility: Designed to replaceThe Resideo PS1201B25 Replacement Power Supply is the standard 120 Vac power box assembly engineered for Honeywell Home F50 and F300 Electronic Air Cleaners. Designed specifically for 16x25 and 20x25 inch models, this Series Two power box features a selectable ionizer current output via the P5 shorting bar, allowing technicians to calibrate performance based on collector cell surface area. It also includes the J8 jumper for optional ozone reduction,