13 X 13 inch, Mounts & Backs, Pack of 5 Colour:Mushroom The cellophane bags supplied with

The cellophane bags supplied with this size will be 16 x 16 inches

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

Outer Size to fit a 10 x 10 inch frame - exact outer size 251mm x 251mm

Outer Size to fit a 12 x 12 inch frame - exact outer size 302mm x 302mm

Choice of aperture size

13 X 13 inch, Mounts & Backs, Pack of 5 Colour:Mushroom The cellophane bags supplied withOuter Size to fit a 13 x 13 inch frame exact outer size 328mm x 328mm 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.