Mountcards are primarily designed to lift the glass (a liquid) away from an image, in order to stop them gluing over time.
Secondly, mountcards give the image a nice border and help draw in the eye.
These mounts are designed to take a standard size image up to the next standard size. We have a good variety to choose from, many colours and textures, you'll be sure to find one suitable for your image.
The first size will be the outside of the mount and the aperture size will be the hole in the middle of the mount.