Clearly Visible: These "Employee Only" signs are designed with white big letters on black background. It is easy to read and hard to ignore, keeping non-employees out of the work area. Sturdy and Duty Material: These "Employee Only signs for business" are made from lightweight and durable acrylic plastic material. Easy to install:Our heavy plastic sign have an adhesive back for mounting. Just peel the double sided tape off and press it onto the door, wall or other smooth flat surface. Perfect size:Our acrylic plastic sign is 9" x 3", which is perfect for doors of various sizes. Fade Resistant: Our sign is printed with high-quality ink, waterproof, and can withstand most environments without fading. Our heavy-duty plastic sign is bold in color and lettering,which is perfect for office or business. Number of Items:4 Size: 9" x 3" rectangle, sleek, rounded corners Material: acrylic plastic Easy to Install: These signs come with very sticky strips attached, making them easy to mount on smooth, flat surfaces. Easy to clean: Unlike poster sign, plastic sign does not fade or tear. If it is dirty or splashed with water, just wipe it with a damp cloth, paper towel or disinfectant. Warranty and Service: Worry-free 2 years warranty and 7 days 24 hours online customer service.