External 500x400mm with centrally positioned window to fit an A3 image (actual size 280x400mm). White core. Acid free. 5 sheets per pack.

Images on this site are a representation of colours available. Actual colours may vary.

The Black board from which the window mounts are made has a plain smooth surface and white core.
Acid free Pre-cut Pinnacle Black picture window mounts with an aperture to fit an A3 image - actual size 280x400mm. As with all of our window mounts we guillotine trim the mount board to 500x400mm, before cutting the window, to ensure clean accurate sizing, after which we cut the windows using computer controlled cutters to ensure high quality, accurate and clean cut bevel windows. These are centrally positioned to allow for either portrait, or landscape images.