A4, 297 x 210 mm, Mounts, Backs, & Bags, Pack of 10 400x300 This means that the 1

This means that the 1 inch excess in width will need to be folded to the back of the mount and held in place using clear self-adhesive tape

Select 'Pack of 1 (single)' 'Pack of 5' or 'Pack of 10' from the options menu

Outer Size to fit a 15 x 15 inch frame - exact outer size 378mm x 378mm

The cellophane bags supplied with this size will be 6 x 4 inches

Outer Size exactly 500mm x 500mm - 50cm x 50cm

A4, 297 x 210 mm, Mounts, Backs, & Bags, Pack of 10 400x300 This means that the 1Outer Size to fit an A4 frame exact outer size 297mm x 210mm Choice of aperture size Scroll through the pictures to find the size that best fits your artwork, then select it from the dropdown menu. Choice of colour On screen colours may not be true to life. Order colour samples here. Select your preferred colour from the dropdown menu. All colours are acid free white core mountboard, 1. 4mm thick.