Double slider windows do exactly as their name suggests; they slide. They can slide horizontally or vertically as their sashes slide left or right, allowing the window to open.
Double slider windows are found in all types of rooms, especially bedrooms since they not only allow light into the room, they offer ample ventilation. This type of sliding window is perfect for smaller rooms that can only accommodate one window, like a bathroom or home office. Furthermore, since double slider windows open easily without protruding inward or outward, they are great for areas that face walkways where overhanging/awning type windows would be problematic.
Lastly, double slider windows provide a great way to let fresh air into any room because they open easily and offer excellent airflow.