Two Panel Sliders incorporate two panels of glass. Of these, one or both glasses can be made to slide, depending on your requirements. Assuming that the window is viewed from the inside, this drawing shows a window with only the left glass sliding, and this shows one with the right glass sliding. Finally, this drawing illustrates a window where both glasses slide. Two panel sliders are usually locked by the means of a simple flap catch, but a KLT catch, slam catch, or push-button catch, can also be accommodated.