500 x 500 mm, Mounts & Backs, Pack of 4 4x4 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

Outer Size exactly 180mm x 130mm

All colours are acid-free white-core mountboard

Outer Size to fit an A3 frame - exact outer size 420mm x 297mm

Select your preferred colour from the dropdown menu

500 x 500 mm, Mounts & Backs, Pack of 4 4x4 This means that the 1Outer Size exactly 500mm x 500mm, 50cm x 50cm Choice of aperture size Scroll through the pictures to find the aperture 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.