Specification Brand : Woodburns Stencil Shop BulletPoint1 : You will get one Double picture mat cut for 12x16 pictures. They will fit into any 16x20 frames BulletPoint2 : The opening is cut to 11.5 x 15.5 to overlap a 12x16 picture. The overlap also helps to mount pictures to the back BulletPoint3 : These mats are acid free and cut from 4 ply mat board BulletPoint4 : Photo May not represent proportions of opening and outside dimension. For color displaying purposes only BulletPoint5 : Also Available in packs of (2) Color : Slate Grey ExternallyAssignedProductIdentifier1 : 0710406945958 ExternallyAssignedProductIdentifier2 : 710406945958 ItemName : 16x20 Double Acid Free White Core Picture Mats Cut for 12x16 Pictures in Ocean Grey and Slate Grey ItemPackageQuantity : 1 ItemTypeKeyword : photo-mat-boards Manufacturer : Woodburn's Stencil Shop PartNumber : WB116201216DBLOCN25 ProductDescription : All of our matting is cut from high quality 4 ply acid free mat board. Each mat is precision cut with beveled edges that show off the beautiful white core of the mat board. ProductSiteLaunchDate : 2019-07-11T17:23:29.713Z TargetAudienceKeyword : Consumers, Photographers, Artists, Teachers