Height and Angle Adjustable: VAIIGO 8.5x11 sign holder stand height can be adjusted from 32" to 51". Meanwhile the angle of the poster frame can be rotated 360 or 180 to meet your different angles of display needs. Easy to Change Posters: Our sign stand features a front open frame that allows you to easily insert or change the content of posters, signs, menus, photos, notices, documents, flyers, ads and more. PVC Protective Cover: Each poster frame is equipped with a UV-resistant PVC cover, which effectively prevents dust, rain and dirt from getting in, keeping the posters clear and durable. Extend the life of the poster. Additional Heavy Base: Our standing sign holder features a sturdy metal base with non-slip rubber strip to protect the floor from scratches.