WALI Aluminum Sign for Home Business Security, Legend Do Not Knock-Do Not Disturb, Rectangle 10" high x 7" Wide, UV Protected and Waterproof (Sign-A-5), Red/Black on White Heavy-duty aluminum rectangle "Do Not Knock - Do Not Disturb" sign Sign lasts 7 plus years outdoor life Great water and chemical resistance Typical maximum temperature 168 degree F 18 Month Warranty, Mounts with screws or clips (screws or clips NOT included)