Abstract: A combination bathtub/shower facility comprised of separately prefabricated shower and bathtub units which are structurally interconnected in such a manner as to maintain the structural, watertight, and aesthetic integrity of the facility. The bathtub and shower units are prefrably of unitary molded construction, e.g. of molded fiberglass construction. The shower unit includes a base portion, and preferably further includes vertically upwardly extending shower walls which are integrally formed with the shower base portion. Alternatively, separately prefabricated shower wall panels may be secureably mounted to the shower base portion. In a presently preferred embodiment, the interconnection of the bathtub and shower units is accomplished by connection facilities which are integral with or easily affixable to the side of the shower base portion which is disposed adjacent to a side wall of the bathtub unit.