This Architectural Drawing is AutoCAD 2d drawing of Acrylic bathtub section detail In AutoCAD, Dwg file. In most cases, when you purchase a plastic bath it will come sitting in a galvanised frame. This frame will not only provide support for the base of the bath (coupled with the baseboard mentioned above) but it also has another job – to provide a fixing point and support for the feet. For more details and information download the drawing file.