3 1/8″P x 7 3/4″H x 6 1/4″W, Coupling for Moulding Profiles Less than 3 1/8″P and 3 7/8″H

3 1/8″P x 7 3/4″H x 6 1/4″W, Coupling for Moulding Profiles Less than 3 1/8″P and 3 7/8″H