Horizontal roller windows open from left to right along upper and lower tracks, much like a sliding glass door. They are usually placed in twos and threes, with one or two panels that open. They’re great for homes and small office buildings that want to let in light and air.
In many ways, these are the ideal impact windows. They have fewer moving parts to seal against water and wind. They close with a satisfying click and are easy to lock. Finally, they seem to last longer than other windows, impact or not.
Homeowners love horizontal roller windows because they can be easily removed so that windows (and tracks) can be cleaned. This is especially useful for windows above ground level.