75-inch case height ensure compatibility with most existing blower and condenser motor brackets

The "3CH" designation indicates a Hood #3

Ensuring your system operates above this threshold is critical to prevent valve chatter

Durable Construction: Features a robust single-pole design focused on longevity and minimizing arcing across points during high-cycle operation

The 1/4" sweat connections on this unit are designed to slide over 1/4" tubing for a standard brazed joint

Lennox 44L72 Limit Switch 75-inch case height ensure compatibilityThe Lennox 44L72 is a high precision 100 145F Auto Limit Switch engineered for critical temperature regulation in commercial and residential furnaces. As a veteran technician knows, the secondary limit must respond instantly to airflow restrictions or over temperature conditions to prevent heat exchanger damage. This Lennox blower limit switch features an automatic reset, opening the circuit when the temperature exceeds 145 degrees Fahrenheit and