16 X 12 inch, Mounts, Backs, & Bags, Pack of 10 12x10 Outer Size exactly 300mm x

Outer Size exactly 300mm x 210mm

Outer Size to fit a 16 x 12 inch frame - exact outer size 404mm x 302mm

All colours are acid-free white-core mountboard

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

then select it from the dropdown menu

16 X 12 inch, Mounts, Backs, & Bags, Pack of 10 12x10 Outer Size exactly 300mm xOuter Size to fit a 16 x 12 inch frame exact outer size 404mm x 302mm 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.