Low flow square back style heater assembly for Dimension One (D-1) hot tubs and spas that utilize the M-Class control system. This 1" heater with dual titanium elements wraps around the control box...
You are buying a Pressure Switch RP2100 with Plastic Header that fits a Raypak Gas Heater System, 105B, 185, 130A, 207A, R185A, 1.75psi..
PRESSURE SWIT