【Contain】 1pcs Do Not Block Keep Clear At All Times Sign. Size 3inx9in. 【Material】This Do Not Block Sign is made of Stainless Steel. It's waterproof, UV-resistant, heat-resistant, and won't bend or scratch easily. Can be used for many years. 【Easy to Install】Come with strong double-sided adhesive on the back of the sign, just tear off the release paper to make it firmly attached to the door. 【Design】Do Not Block Signs with eye-catching text make it clear to visitors that this area is an emergency passage and must not be occupied at any time.