Abstract: A unit for filling an area having a floor, a first side wall, a second side wall and a back wall has a pan, a shower area, a zero threshold drain, a frame, a space created by the frame and the second side wall and a storage unit disposed in the space. A shower area is defined by a first panel, a second panel and a third panel and has an opening through which a user may enter, the opening also being defined by the panels. The first panel is adapted to be disposed against the first side wall and the pan and the second panel is adapted to be disposed against the second side wall and the pan. The zero threshold drain is disposed across the opening. The frame is adapted to support the third panel and create the space between the second side wall and the frame.

Abstract: A window or door system includes a frame adapted to be received within a window or door opening. A window or door unit is disposed on the frame, and a retainer is received by interference fit on either the frame or the window or door unit. The retainer has a portion that extends to engage the other of the frame and window or door unit, and to hold the window or door unit on the frame. The frame can be rectangular, for example, and the retainer may be linear extending along at least one edge of the frame. The frame can include an outwardly opening slot, and the retainer may be received by snap fit in the slot.