Here's a picture from the under side of the Baycrest twinnie, model HBT-53. Note that both models---this one and the Hoover 0519---were equipped with a one-piece, polypropylene wash tub (not the aluminum or stainless tubs of earlier models). In fact, wash tub and spin tub were molded onto in a single piece, not separated tubs like the ones from older models. My photo was shot before I did extensive repair getting rid of the rust with brand new paint (used either spray or touch-up glaze).

