100% brand new and high quality. These are Acid Free mat boards
The mats are beveled cut with white core and 4-ply thick (about 1.5 mm or 1/16 inch),
Mat Opening size is 3.5' x 5.5' inches for 4x6 Pictures.
the backing is black on one sides and white on other side . it can be used for matting photo,art,and needlepoint. Also Great for crafts, backboards sign, children's projects, and school projects
Package included ：25pcs black Picture Mattes with 25pcs backing boards with 25pcs crystal clear sleeve folding flap bags

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 6.26 inch
Height : 3.27 inch
Length : 8.39 inch

Item Weight: 1.9 pounds (View shipping rates and policies)
Shipping Weight: 3.45 pounds (View shipping rates and policies)

ASIN : B0759ZS3N8