the "/U" suffix simply denotes a "Universal" packaging designation used by the manufacturer

Operates at 115 Volts with a high-torque 1/2 Horsepower rating to handle system-specific static loads

humming motors

ensuring long-term reliability in hard water conditions

the brass trim and bronze construction allow for saturated steam performance up to 38 psig

York S1-328-16423-000 Kit 322056-301 the "/U" suffix simply denotesThe York S1 328 16423 000 Condensate Pan Kit 130M is a critical OEM replacement part engineered specifically for high efficiency 95+ AFUE 33 inch gas furnaces. Designed for 130,000 BTU systems, this secondary heat exchanger drain pan features a precise 1. 13 inch restrictor hole size to maintain correct pressure differentials and drainage flow. In the field, technicians often encounter cracked or warped pans that lead to secondary heat exchanger