the NSB8BTN240-0 is the manufacturer-recommended direct replacement for several legacy NS series sensors

and the necessary center mounting screw for a complete installation

leading to air leaks

typically functioning in a normally closed (NC) position to maintain the control circuit until a high-pressure limit is reached

It is designed to work with your existing SFA-SFP or SSA-SSP series electronic or pneumatic actuators

Lennox 59W84 Pully Assembly L99H008 the NSB8BTN240-0 is the manufacturer-recommendedThe Lennox 59W84 Pulley Assembly is a critical OEM replacement part designed for high performance belt drive systems in commercial HVAC units. This tensioner pulley assembly with bracket ensures precise belt alignment and constant tension, preventing slippage and premature wear on the blower motor and drive belt. Engineered for durability, the 59W84 features a heavy duty bearing integrated into the pulley to withstand high RPM operations and thermal