Spa with recessed filter chamber

A spa comprising a shell for the spa water, a filter cavity integrally molded with the shell and inwardly open to the interior of the shell in the region of the water level to receive surface water therefrom, and a replaceable generally cylindrical filter received in said cavity in a horizontal position, the cavity being manually accessible from a region above the water level and having upwardly open cradle supports for the end portions of the filter, the filter being removable by manual vertically upward displacement of the filter from the upwardly open cradle supports, and the wall of the cavity at one end of the filter having a suction connection for withdrawal of the filtered water.

A spa with a water circulation system, comprising a shell formed of molded plastic sheet material having portions defining bottom and side walls of a bath chamber for the spa water, said plastic sheet material also having integrally molded portions joining one of the side walls of the bath chamber and defining a filter cavity configured to receive a generally cylindrical filter positioned on a horizontal axis, the filter cavity communicating with the bath chamber below the level of the spa water, portions of said plastic sheet material defining the filter cavity being positioned to define a cavity having upwardly flaring side walls one of which joins and is integrally molded with the adjacent side wall of the bath chamber at a level above the bottom of the bath chamber but below the water level in the bath chamber, a replaceable generally cylindrical filter positioned on a generally horizontal axis in the filter cavity, the filter cavity having an upwardly presented access opening to provide for manual sidewise insertion and removal of the filter, and a suction connection at one end of the filter cavity for withdrawal and recirculation of the filtered water.