McDonnell & Miller 326950 Junction Box Cover Els PW 17895 Common causes include blocked vents

Common causes include blocked vents

For technicians servicing American Standard or Trane HVAC systems

You must always use the HH18HA493 if that is the specified Carrier replacement part for your unit

When performing a HVAC furnace repair or heat kit upgrade

is designed for specifically sized Sporlan valve bodies

McDonnell & Miller 326950 Junction Box Cover Els PW 17895 Common causes include blocked ventsThe McDonnell & Miller 326950 Junction Box Cover is a precision engineered OEM replacement part designed for field technicians maintaining boiler control systems. This rugged component is specifically built for the McDonnell & Miller 42 and 150 Series low water cut offs and level controls, directly replacing Model Number 150 436. It provides critical protection for internal electrical connections, shielding terminal blocks and wiring from dust,