When the existing window is a horizontal slider, or several steel casement windows together in one opening, our sliding window is the answer. The sliding window can be done as a double slider, left or right opening, or a triple slider where both left & right open and the center is stationary.
The tracks consist of a C channel taped and screwed into the opening at left, right, and top, and the bottom track is just taped in the opening. It also features Teflon slick tape in the opening sash track. Double tracks are inserted into the C track at left, right, and top. This allows the inner track to be shimmed to accommodate out of square conditions.
The vinyl tracks don't need weather-stripping because the material itself acts as the weather-stripping. We use a physical interlock between the sashes for extra tightness.