Designed specifically for compatibility with Daikin Applied and legacy McQuay rooftop units

the Weil McLain 381-800-477 7-inch vent damper is the critical OEM component required to maintain proper draft and combustion efficiency

and 388T series

Does this unit require a specific power polarity

Carrier HH18HV125 Limit Switch 323613-751 Designed specifically for compatibility withWhen you are troubleshooting a furnace that is tripping on high limit, you need a reliable, exact match replacement like the Carrier HH18HV125 Limit Switch. This genuine OEM furnace limit switch is a 95 125F auto limit switch designed as a primary safety control for your HVAC system. It features a Single Pole Double Throw (SPDT) configuration and is rated for 5 FLA at 240 VAC. The switch is engineered to open the circuit on temperature rise at 125F