Simpson 6-3/4" Beam, 6-3/4" Post, End Column Cap ECC77The ECC is designed to provide strong column beam connections in end of beam applications in wood construction. The seat of the column cap provides an additional surface area of bearing that extends beyond the one side of the column. The ECC helps to distribute the load from the beam and provide support for the connection. Model No. ECC77 Description. 6 3 4" Beam, 6 3 4" Post End Column Cap Material. 3 gauge Finish. Simpson Strong Tie gray paint