EFCO has one of the world's largest steel form manufacturing plants and a strategically located form distribution network. The company s projects have included bridges, dams and spillways, home building, industrial, parking garages, retaining walls, stadiums, round tanks, treatment plants and tunnels. EFCO Forming Systems Home Building System uses the standard EFCO all-steel Hand-E-Form System and can be adapted to most architectural designs. W.A. Jennings founded EFCO as Economy Forms Corporation in 1934.