This is a glossy printed metal sign that's safe for indoor or outdoor use. The rust on the edges is part of the printed design. Think of our signs as an art print done on metal instead of paper. They are lightweight, easy to hang and easy to store when not in use. The glossy finish protects it from the elements if you want to use it outside or in a humid area like a bathroom. They are completely safe for indoor or outdoor use. We try to offer unique designs that you can use anywhere in the house or even outside without worry. Available in 2 sizes. The video is of the 9"x12". The 9x12 has 2 holes located on the left and right sides. The larger sign is 12"x18" and has 4 corner holes. Both are printed on rust free aluminum which is safe for indoor or outdoor use.