You should enter the exact size of your picture in millimeters.
The mount will be 2mm smaller all round to ensure it
overlaps your picture slightly.

Aperture 1:

Aperture 2:

Aperture 3:

This measurement will be the width of the mount around the edge.
The space between the cut outs will be 75% of this measurement.

Select your mount colour from the colours on the left.

Snow White Ivory Magnolia Mushroom Omar Brown Baghdad Brown Silver Grey Lavender Dark Grey Pale Green Mid Green Bright Green Newbury Moss Dark Pink Terracotta Red Sun Football Red Beaujolais Maroon Mid Blue Royal Blue Dark Blue Imperial Blue Black