Unlike concrete, the flexibility of polyethylene allows for expansion of ice thus avoiding cracked water troughs in frosty conditions. The detail paid to design of ball housings ensures the animals cannot get at ball valves therefore avoiding unnecessary breakages .Troughs being lightweight can prove invaluable if troughs need to be moved from pasture to pasture. The range JFC troughs come with top access points to allow easy fitting and adjustment of ball valves. All JFC water troughs come complete with ½ " High Pressure Ball Valves. External Dimensions 52" long x 19" wide x 23" deep. Capacty 180 litres/40 gallons.