the 1/4" hex end is standard for many HVAC cover screws

extending service life in demanding climates

The 0556036 is the lead-free version (LF) required for most modern potable water installations

allowing for smoother control valve modulation

Direct OEM Compatibility: Specifically designed for Amana and Goodman air handlers and furnaces to ensure a perfect 10" x 10" fit

Aprilaire 5455 Temperature Sensor 320819-301 the 1/4" hex end isThe Aprilaire 5455 is a critical low temperature sensor designed to maintain the integrity and efficiency of your dehumidification system. As a genuine OEM sensor, it provides precise monitoring of coil temperatures to prevent frost buildup and component damage. This Aprilaire sensor replacement is engineered specifically for compatibility with high capacity models, ensuring that HVAC freeze protection protocols are active when temperatures drop. By