250 x 250 mm, Mounts, Backs, & Bags, Pack of 10 Aperture size:Equal borders of 25mm - exact aperture size 200mm x 200mm Outer Size to fit a

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

These backing boards are made from the same quality mountboard as our mounts

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

50cm x 40cm

Outer Size to fit an A1 frame - exact outer size 841mm x 594mm

250 x 250 mm, Mounts, Backs, & Bags, Pack of 10 Aperture size:Equal borders of 25mm - exact aperture size 200mm x 200mm Outer Size to fit aOuter Size exactly 250mm x 250mm, 25cm x 25cm 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.