MARS 32391 Relay 321702-401 The 'BX' simply indicates the

The 'BX' simply indicates the part is individually boxed for shipping

it is constructed from heavy-duty galvanized steel to ensure dynamic balance and minimize vibration during high-RPM operation

ensuring that the system meets its rated SEER levels

This board is designed for 2-stage gas furnaces under the Armstrong

Does this pump come with 2-inch flanges

MARS 32391 Relay 321702-401 The 'BX' simply indicates theThe MARS 32391 Relay is a field proven solid state delay on make timer engineered to protect HVACR equipment from rapid short cycling. Designed for professional contractors, this universal 2 wire delay on make solution operates across a wide 18 240V AC input range, making it a staple for servicing residential and commercial systems alike. This MARS 32391 adjustable timer features a heavy duty dial that allows for precise time delay relay settings from