Southland Trailers, located on 1405 - 41st. Avenue North, Lethbridge, Alberta, has been a manufacturer of quality built products for over twenty years. Southland Trailers offers a complete line of steel and aluminum livestock trailers and quality horse trailers. For the past 30 years Southland Trailer Corp. has been an industry leader of trailer manufacturing in Western Canada for. We have grown to become one of the largest of steel product manufactures in Southern Alberta, with a customer base that stretches across Western Canada, the Territories, Ontario and several bordering US states.