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Essentials White Core mat board is a quality North American made mat board with a great variety of colors for decorative framing. The bright white Eco-Core is made of recycled paper and is buffered to be pH neutral (Acid-Free). This mat is best used for decorative framing and is not of conservation quality.
Opening Size Instructions
Openings are cut to the size you specify; normally you will want an opening 1/2" smaller per dimension than your artwork. This gives space to hinge and prevents it falling through the mat opening. So, for example, an 8x10 photo would use a 7 1/2 x 9 1/2 opening.
Sizes are listed by width first, and height second. Example 8" (width) by 10" (height).
Please make sure that the opening width and height do not exceed the size dimensions.
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Mat Shop has a great attention to craftsmanship is delivery time. I will defintly use them again and will refer them to my friends!!!