Venetian blinds have horizontal slats that go above each other, and are typically made of either metal or plastic. In some occasions you will wooden slats – they are particularly popular in the United States – but typically they come under a different style altogether today. Usually suspended by cords, the slats all rotate and move simultaneously when you use the pull system and gives you full 180 degree accuracy.
This lets you get a comfortable rotation of the slats to give you a fine balance of the room getting enough heat and air. Venetian blinds can also be moved upwards, allowing the lowest slats to fold up into the bottom of the next one and to allow you to get the full light available. One of the most popular forms of blinds as they look classy and are typically available in many styles, making them easy to find in a format that you like.