Lennox 75X66 Mesh Insert 320819-301 What does the L145-30 rating

What does the L145-30 rating signify on this Bard switch

the ASCO 8210B54 typically requires a minimum operating pressure differential (often around 5 PSI) to lift the diaphragm and allow flow

If the internal slide of the 4-way valve is mechanically stuck

which can lead to bypassing air and inefficient condensate drainage

this white wall mount sensor is the standard physical replacement for a T244 Selectrastat when a separate selector/sensor configuration is required

Lennox 75X66 Mesh Insert 320819-301 What does the L145-30 ratingThe Lennox 75X66 Mesh Insert is a critical OEM component specifically engineered for the Lennox PureAir PCO 20C air purification system. Measuring 21 x 26 x 2 inches, this replacement catalyst features a durable honeycomb structure coated with titanium dioxide (TiO2). When integrated into the Healthy Climate filtration assembly, it works in tandem with UV C lamps to initiate a photo catalytic oxidation process. This reaction effectively decomposes