DURABLE - DBL491323 Self-adhesive frame features a magnetic cover that pulls back effortlessly to quickly exchange and update your signs. Four-sided frame works horizontally or vertically for convenient placement virtually anywhere. Easy-to-use adhesive requires you to simply peel and stick for immediate attachment to any smooth, solid surface. Dual-sided construction ensures visibility from either side when affixed to transparent surfaces to reach more people at once. Half letter-size frame is perfect for displaying literature, notices, posters, health/safety information and more.