This genuine McDonnell & Miller 21-12 part ensures your feeder maintains its proportional feed action without environmental interference

maintaining pneumatic control system integrity starts with a secure base that prevents air line leakage and protects the 5/32" OD poly tubing connections

Proper installation of this replacement drain fitting is vital for maintaining the gravity-fed drainage required for optimal evaporator pad performance across various Honeywell Home humidifier models

and Frigidaire gas furnaces

leak-free fit to existing silicone or rubber tubing

Trane SWT1261 Limit Switch This genuine McDonnell & MillerThe Trane SWT1261 Limit Switch is a critical safety component designed for precise thermal regulation within residential furnaces. Engineered to replace the C340056P07 and SWT01261, this high limit control monitors the internal heat exchanger temperature to prevent overheating. Operating on an automatic reset logic, this thermal limit switch is factory calibrated to open the circuit when temperatures reach 260F and automatically close (reset) at 230F.