Can be used hanging or standing, vertically or horizontally, to fit in the available space. PH neutral coating paper; It will not distort the image. A plastic front guard makes the frame more secure in use. This frame fits a picture with dimensions of 13 x 18 cm if used with the stand, and fits with a picture with dimensions of 21 x 30 cm if used without the stand. Inner frame board included. The holder will not turn yellow because it is acid free. Different wall materials require different types of fasteners. You must use mounting hardware suitable for the walls in your home, sold separately.