Wet Mech Thermostat Controller 192

Water Mechanical Thermostat Controller 192 For Use With Mfr Model Number C-12 C-13 C-15 C-17 C-18 C-24 C-27 C-30 C-4 C-5 C-6 C-7 C-9 MC-10 MC-11 S-12 S-13 S-15 S-17 S-18 S-24 S-27 S-30 S-36 S-39 S-40 S-45 S-54 S-57 S-58 S-6 S-7 S-9 Fits Brand Hatco For Use With Booster Heater