The McDonnell & Miller 310800 Gasket is a critical sealing component engineered specifically for the 21 Series and 221 Series float-operated water feeders

making it a staple for HVAC service kits and boiler repair applications across residential and commercial heating systems

When you're servicing fractional horsepower systems

and Nordyne heating systems

What is the difference between the H721LC and H-721LC

Packard A65105 Fan Blade The McDonnell & Miller 310800The Packard A65105 is a high performance 10 inch aluminum fan blade engineered for precision in condenser and evaporator applications. Designed with a 5 blade configuration and a 20 degree pitch, this unit optimizes CFM output while maintaining structural integrity under high torque. It features a 1 4 inch hub bore with a CCW (Counter Clockwise) rotation as viewed from the discharge side. The intake side hub location ensures the air flow is directed