Removable closure for a bathtub having a walk-through

A conversion system for use with a bathtub having a cut-out corresponding to a portion of the tub sidewall that has been removed, said portion including a length of the ledge of said bathtub, said system comprising:

• a generally U-shaped insert disposed in the cut-out and secured in use to the sidewall to define a walk-through in said bathtub, said insert having a central sill portion and jamb portions projecting upwardly and from opposite ends of said sill portion in use, the U-shaped insert having a width greater than that of the sidewall of the bathtub such that the U-shaped insert defines opposed, generally U-shaped protuberances respectively projecting interiorly and exteriorly from the tub sidewall;
• and
• a closure including:
• an exterior insert positionable, when the U-shaped insert is in use, at an operative position whereat the exterior insert is disposed exteriorly of the U-shaped insert;
• and
• an interior insert positionable, when the U-shaped insert is in use, at an operative position whereat the interior insert is disposed interiorly of the U-shaped insert, the interior insert being adapted to be releasably secured to the exterior insert when the interior and exterior inserts are operatively positioned,
• wherein, when the closure is in use, the exterior and interior inserts are operatively positioned and releasably secured to one another and the interior insert is sealed against the U-shaped insert to permit the bathtub to be filled to a height above the sill portion and
• wherein, in use, the interior insert is sealed in a watertight manner against the protuberance projecting interiorly from the sidewall and the exterior insert is disposed in a non-watertight relation against the protuberance projecting exteriorly from the sidewall thereby permitting leaks of the interior insert seal to be detected.