An automatic pool cover box includes a front wall having a plurality of elongated extrusions, each extrusion having a first side wall, an opposite second side wall, a first coupler on the first side wall and a second coupler on the second side wall. Adjacent extrusions are coupled together using a respective first coupler and second coupler. A second side wall of one of the extrusions defines a bottom edge of the front wall. A rear wall includes a plurality of elongated extrusions, each extrusion having a first side wall, an opposite second side wall, a first coupler on the first side wall and a second coupler on the second side wall. Adjacent extrusions are coupled together using a respective first coupler and second coupler. A second side wall of one of the extrusions defines a bottom edge of the rear wall which is at least intermittently connected with the bottom edge of the front wall. A lid includes a plurality of elongated extrusions, with each extrusion having a first side wall, an opposite second side wall, a first coupler on the first side wall and a second coupler on the second side wall. Adjacent extrusions are coupled together using a respective first coupler and second coupler. A hinge member interconnects the rear wall and the lid. The hinge member is coupled with the rear wall in a vertically adjustable manner and is hingably coupled with the lid.

A system for deploying and recovering a cover over a space, like a swimming pool, has a reel housing that has extensions and a base that may be used to securely mount the reel housing in a receptacle, like a recess box. The extensions and the base may brace the reel housing which is made of inelastic or non deformable material which may be thick metal. The ropes are shortened in length so that there is no excess when the cover is in its fully open position. The ropes are selected to be inelastically deformable. A motor drives the rope reels in the reel housing and the drum for the cover. The clutch, that alternately engages the rope reels and the drum has a non sacrificial pin to ensure that the clutch and the reels or the drum remain driven and engaged.

A motorized pool cover system, having a drum assembly and a reel assembly, located proximate one another, with a reversible electric motor coupled to each, and a pool cover, having a first end coupled to the drum assembly, and side edges with lines extending from the side edges and coupled to the reel assembly, and a controller, which is electrically coupled to the motors, and to an electrical power source, wherein the motor controller distributes power to the motors and controls operation of the motors.