Spa-Quip heater body lock ring, suits all models of classic heaters and Spa Power 500 controllers : 54500 , 500A15 , 500A20, 500A15MK2 , 500A20MK2, also suits some old Pulsar and Hot Spring Spas heater
This lock ring fits a Q3020 heater body (this is the larger locking ring )
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Once submitted, your pool/spa details will be entered into our sizing calculator along with your local weather details provided by the “Bureau of Meteorology”. A personalise evaluation will be emailed to you within 1-2 business days by a Sensaheat product specialist.