• Manufacturer: Hayward 

• Type: Nut 

• Material: Rubber 

• Set includes 2 nuts 

The Hayward HAXNUT1930 Union is a set of two nuts made of durable rubber. The replacement nut pair fits securely onto Hayward H-Series millivolt electronic ED1 and ED2 style swimming pool heaters. The Hayward nut is an affordable replacement for maintaining the efficiency of your pool and spa heater.