Specification Brand : ArtToFrames BulletPoint1 : Mat is standard 4 ply material used in Custom Frame shops. BulletPoint2 : Made of lignin-free and pH-neutral materials. Fits into a(n) 8x10 Frame. BulletPoint3 : This mat will fit a 4x6 Photo. Actual opening size will be 3.75x5.75. BulletPoint4 : NOTE FOR ORDERS SOLD BY ArtToFrames ONLY: OPENING SIZE(s) MAY BE CHANGED BY CUSTOMER. Please reach out to us with your desired opening size. If we do not receive a request for a custom size within 2 hours of your order it will be cut with the opening size listed above. Feel free to contact us with any questions you may have. Color : Granite - 4 Pack ItemDisplayDimensions_Length : 10 inches ItemDisplayDimensions_Width : 8 inches ItemDisplayWeight : 0.07 pounds ItemName : 8x10 Granite/Mountain Grey Custom Mat for Picture Frame with 4x6 Opening Size (Mat Only, Frame NOT Included) - 4 Pack ItemPackageDimensions_Height : 5 inches ItemPackageDimensions_Length : 18 inches ItemPackageDimensions_Width : 15 inches ItemPackageQuantity : 1 ItemTypeKeyword : photo-mat-boards Manufacturer : ArtToFrames Material : 4-Ply Acid Free Cardboard ModelName : Mat_B514_11x14-8.5x11.5_Oval_(1)-SETS ModelNumber : Mat_B514_11x14-8.5x11.5_Oval_(1)-SETS NumberOfItems : 4 PartNumber : Pack_4_MAT-152-8x10 ProductDescription : Fits a 8x10 Frame, and a Photo 4x6. For custom cuts and designs please reference !~Product SKU # - - Pack_4_MAT-152-8x10~\ ProductSiteLaunchDate : 2024-03-16T00:22:12.701Z Size : 8x10 SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1