4 X 4 inch, Mounts, Backs, & Bags, Pack of 10 13x13 All colours are acid-free white-core

All colours are acid-free white-core mountboard

40cm x 30cm

Outer Size to fit a 11 x 9 inch frame - exact outer size 277mm x 226mm

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

Outer Size to fit a 13 x 13 inch frame - exact outer size 328mm x 328mm

4 X 4 inch, Mounts, Backs, & Bags, Pack of 10 13x13 All colours are acid-free white-coreOuter Size to fit a 4 x 4 inch frame exact outer size 99mm x 99mm The cellophane bags supplied with this size will be 6 x 4 inches. This means that the 2 inch excess will need to be folded down at the back of the mount, then sealed with the self adhesive flap in the normal way. 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