Does this kit include multiple fittings

As an OEM Williams replacement part

It features two setpoint windows

What is the difference between the Sensus Green and Silver springs

York S1-024-35268-000 Switch Els PW 17895 Does this kit include multipleThe York S1 024 35268 000 is an essential OEM dual stage air pressure switch designed for precision monitoring of combustion airflow in high efficiency York, Coleman, and Luxaire gas furnaces. This SPNO (Single Pole Normally Open) control is calibrated with two distinct setpoints: . 70" WC and 1. 25" WC, facilitating precise communication between the inducer motor and the ignition board during multi stage heating cycles. Built to close on fall, it