A1, 841 x 594 mm, Mounts & Backs, Pack of 5 Aperture size:Equal borders of 55mm - exact aperture size 731mm x 484mm These backing boards are made

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

Outer Size to fit a 20 x 16 inch frame - exact outer size 505mm x 404mm

Essentially they are picture mounts with no window

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

For larger amounts please increase the quantity

A1, 841 x 594 mm, Mounts & Backs, Pack of 5 Aperture size:Equal borders of 55mm - exact aperture size 731mm x 484mm These backing boards are madeOuter Size to fit an A1 frame exact outer size 841mm x 594mm. 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.