DURABLE METAL SIGNS These employees only signs are made from solid aluminum with a thickness of 40Mil (1MM) . They are waterproof, lightweight, rust free, and not easy to bend or scratch. The UV print with durable material is 100% weather resistant and will last for many years. Can be used on indoor and outdoor applications for business or home. STRONG SELF ADHESIVE This employees only sign comes with a strong self adhesive backing. Super easy to install to most smooth and flat surfaces, like wood, metal, glass, smooth wall surfaces and so on. Best glue to make sure it will withstand different weather conditions. Also, the sign comes with some extra double-sided tapes for spare use, which doubly ensures it will stay in place and never fall off. MODERN SIMPLE DESIGN This employees only sign is designed in a simple rectangle, with burr-free rounded corners and a perfect size of 7.0"W x 2.0"H. The UV printed lettering will not fade even in extreme sun and temperatures. The silver background color with black letters makes the message stand out very well and people will never miss it. VALUE PACK OF 4 SIGNS Your purchase includes FOUR metal employees only Signs. It will be enough for you to use them on different doors. When you think about the price for FOUR signs made from high quality, durable metal material, you won't regret your choice. SUPER EASY TO INSTALL There is a self adhesive backing on the employees only sign, which makes it super easy to install. Just tear off the backing and stick to anywhere you want. No drilling or any special tools needed. It also comes with complete easy installation instructions.