This silver square cornered A4 waterproof snap frame clips open from the front and around all four sides. It has a weatherproof rubber seal to protect poster from rain and it also includes a weatherproof poly carb cover. The clip frame system makes changing graphics easier without having to remove the frame from the wall each time. These poster frames are also called snap frames or clip frames. They can be displayed in portrait or landscape orientation and come supplied with mounting hardware. They are ideal for advertising as well as general signage for a smart, professional look for your businesses signage.