This economy sign holder is a great solution to effectively display sale and product information on a budget. Made of 15 mil PVC with a clear covered face for protection and maximum visibility. The 4" x 6" sign holder can be used vertically or horizontally. Adhesive foam strips line both of the long back sides and will adhere to almost any clean and smooth surface. This sign holder is open on one of the short sides making it simple to insert and change out signs.