Abstract: In combination a shower stall structure for bathtubs or shower basins having a top and bottom comprising at least one opening extending from top to bottom defined by a multiplicity of stiles each stile extending in both a horizontal and vertical direction abutting an adjacent wall or stile, wherein at least one opening is closed by more than one closure member spanning across the at least one opening, having pivot mechanisms carried by both the multiplicity of stiles and the more than one closure member at the peripheral extremities thereof wherein the pivot mechanisms are adjustable in position along the respective peripheral edges of at least one of the multiplicity of stiles and the more than one closure member, allowing for dimensional variation of such as the at least one opening with respect to the dimensions of the corner in which the shower stall is installed.