Shower door leveler

A shower door assembly, comprising:

• at least one door panel having a flat bottom surface;
• a bottom frame member with a length extending from a first distal end to a second distal end, said bottom frame member including a top portion and a bottom portion, the top portion including an upper side and lower side with two grooves on the lower side, the two grooves being parallel to one another, the bottom portion including two sidewalls parallel to one another along the length, of the two sidewalls, each of the two sidewalls having a top edge engaged in one of the two grooves, of the two sidewalls and each of the two sidewalls having a bottom edge resting on a sloped threshold;
• said at least one door panel adjacent to and above the upper side of the top portion of said bottom frame member along the length;
• wherein said bottom frame member has a height from the upper side to the bottom edge of one of the two sidewalls, the height decreasing along the length of said bottom frame member.

A shower door attachment device, comprising:

• an elongated rail including a bottom portion connected to a top portion, said elongated rail having a length and a width;
• said bottom portion having a bottom wall and first and second vertical sidewalls extending up from the bottom wall along the length of said elongated rail, each of the first and second sidewalls having a top edge and a bottom edge;
• the top portion including a lower side with two elongated grooves each defined by inner and outer surfaces, extending along the length of said elongated rail, each of the two elongated grooves receiving between its inner and outer surfaces, and at least partially concealing, one of the top edges of the first and second sidewalls along length of said elongated rail;
• wherein the top edges of the first and second sidewalls slope along the length of said elongated rail such that said elongated rail decreases in height along the length.