Abstract: A latch system for a closure element that is slidable relative to a mounting frame between first and second positions. The mounting frame has a strike element to be engaged to releasably maintain the closure element in a first position. The latch system has a first frame part, a first handle that is mounted to the first frame part for movement between first and second positions, and a first latch assembly having a latched state and a released state. The first latch assembly in the latched state is capable of cooperating with the strike element to selectively prevent the closure element from moving from the first position for the closure element into the second position for the closure element. The first latch assembly in the released state permits the closure element to move from the second position for the closure element into the first position for the closure element and from the first position for the closure element into the second position for the closure element.