Please Do Not Disturb, Welcome, Please Knock Hanging Sign Here are a few advantages of owning our sign # 1 Highly VISIBLE and Promotes AWARENESS: The reversible sign is larger enough to be seen by everyone eliminating disturbances and it also teaches the kids good habits such as to knock before entering # 2 Multi-Functional: The sign is ideal for ensuring people do not interrupt you no matter what you are doing be it sleeping, in a meeting, reading, trying to concentrate on something important, and much more. # 3 Light but DURABLE: The sign is made of strong plastic ensuring it will last a very long time. # 4 Easy To Use: All you must do is take it out of the pack and slip it onto the door handle or knob. It's that easy. Enjoy our simple way of enabling your peace and quiet, ensuring people don't bother you allowing you to focus on the more important things.