The disclosure is directed to motorized closure assembly , comprising: an opening frame configured to fit around the opening; a substantially rectangular closure slab having a closure slab frame configured to surround the substantially rectangular closure slab and sealingly fit within the opening frame; and a motorized driver , wherein the motorized driver is entirely embedded within the closure slab frame or within a combination of the closure slab frame and the opening frame ,the motorized driver configured to slidably move the slab between an open position and a closed position.
