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Shelburne TruHybrid (8372) 2021 and Newer
1 x Crossfire Tree-Style CFBT230 Burner
Because alkalinity is the buffer that holds pH steady
To unlock and remove cap
just less of it
Sundance® Spas Circuit Board 6500-528 (1983-1990) 624 System Brand_Energy Parts Plus Shelburne TruHybrid (8372) 2021 andSundance Spas Circuit Board 6500 528 (1983 1990) 624 System Overview Featuring durable construction and advanced technology, the Sundance Spas Circuit Board 6500 528 provides precise control over essential spa functions, including temperature regulation, jet activation, and filtration cycles. Its compatibility with the 624 System ensures a perfect fit and easy installation, allowing you to upgrade your spa with confidence. Restore your vintage