Abstract: A magnetic door opener device adapted to be positioned below a countertop made of non-magnetic materials, the device having a pair of magnets which attractively interact with a pair of magnets attached to the bottoms of a pair of windows which are suspended on a trolley for movement to or fro to determine closed and opened positions of the window. The device underneath the countertop comprises a pair of spaced toothed sprockets supporting an endless belt having inner and outer runs, the outer run supporting a magnet adapted to magnetically cooperate with a magnet in the bottom of one of the windows, and the other run of the belt supporting a different magnet adapted to attractively cooperate with a magnet in the bottom of the other window. A motor control and limit switches are provided for controlling the opening and closing positions of the windows when a control switch is operated by an operator.