Active Aqua Chiller Refrigeration Unit 110 HPbr br Microcomputer control system and LCD display very user-friendly br Large refrigeration capacity recommended 13-105 gal 50-400 L br Freon free environmentally friendly uses R134a br Tubing size 12 HGTB50 34 HGTB75 comes with two sets of fittings br Capable of chilling approximately 40 gal by 15 F and 13 gal by 30 F in 20 hrs