Vertical Blinds are made of thick plastic. In the cold room of food businesses, this slows the heat leakage into the cold room. in warmer climates, vertical blinds discourage the flies and some other insects from entering the building. They are clean and crisp and a popular choice for homes, offices and rental properties.-Ideal blinds for long and wide windows and the first choice for bi fold or patio doors. Vertical Blinds are less likely to be damaged in strong winds and to hold dirt. They require less muscle strength, and faster to operate. Check below for our brands & swatches!