These "Please Keep Closed" Signs are essential for any facility. Help to ensure customers or guests to your house or place of business don't allow a cold draft into a warm area, or allow a pet to escape into the street by keeping these signs above or near doors. Made of lightweight and durable aluminum, these signs are suitable for use indoors and outdoors and feature easy-to-read font to clearly convey the message. These office signs feature a brushed metal look which effortlessly complements any type of decor to make a lasting impression. These signs are self-adhesive and easy to install. Simply peel off the backing and stick to a clean surface.