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) 22x24 Frame. BulletPoint3 : This mat will fit a 18x20 Photo. Actual opening size will be 17.75x19.75. BulletPoint4 : NOTE FOR ORDERS SOLD BY ArtToFrames ONLY: OPENING SIZE(s) MAY BE CHANGED BY CUSTOMER. Please include your desired opening size(s) by email, or through the contact seller link. 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 : Soft Pink ItemDisplayDimensions_Height : 22 inches ItemDisplayDimensions_Length : 24 inches ItemDisplayDimensions_Width : 24 inches ItemDisplayWeight : 1 pounds ItemName : 22x24 Soft Pink / Seashell Custom Mat for Picture Frame with 18x20 opening size (Mat Only, Frame NOT Included) ItemPackageDimensions_Height : 22 inches ItemPackageDimensions_Length : 24 inches ItemPackageDimensions_Width : 24 inches ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : photo-mat-boards Manufacturer : ArtToFrames Material : Paper ModelName : MAT-94-22x24-Seashell ModelNumber : MAT-94-22x24-Seashell NumberOfItems : 1 PartNumber : MAT-94-22x24-Seashell ProductSiteLaunchDate : 2015-11-11T18:36:39.398Z Size : 22x24 StreetDate : 2017-03-25T00:00:01Z Style : Customized UnitCount : 1