insertion of edges 46 into the slots as shown in fig2 and 17 edge 24 on the bottom of side wall 14 includes a ledge 54 extending transversely and projection 26 can include a linear retainer portion 56 extending from ledge 54 at an acute angle 58 and a curved end portion 60 the enclosure walls 14 16 18 and the bathtub 12 can be formed by conventional molding techniques preferably from plastic materials such as acrylics or fiberglass inserts 20 can injection molded with plastics or other materials retaining clip 52 may be metallic or alternatively be integrally fabricated with insert 20 during the molding or other fabrication process when one wants to assemble the bathing shower enclosure after the pieces have been moved to the installation site one installs the bathtub 12 on a horizontal floor 90 or other essentially horizontal support one then drops the back wall 16 down onto the upper rim 13 of the bathtub one then takes a side wall 14 or 18 places its rear upper pivot element 44 into the corresponding receiving pivot pocket 42 and pivots the side wall as shown in fig1 13 this creates a self sealing joint between the side and rear wall as this is occurring the lower retainer 56 60 as shown in fig1 slips into the slot between ramp 36 and the upper rim 13 of the bathtub the frictional engagement between the clips 52 and the receiving pockets 38 and 40 help the clips resist return movement out of those pockets if the clips are securely adhered to the corresponding tangs 34 and 28 that.