<ul><li>Mat is standard 4 ply material used in Custom Frame shops.</li><li>Made of lignin-free and pH-neutral materials. Fits into a(n) 22x24 Frame.</li><li>This mat will fit a 18x20 Photo. Actual opening size will be 17.75x19.75.</li><li>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.</li></ul><br><br>Fits a 22x24 Frame, and a Photo 18x20. For custom cuts and designs please reference !~~~~~~~~~~~~~~~~~Product SKU # - - MAT-61-22x24~~~~~~~~~~~~~~~~~\\

22x24 Smooth White / Super White Custom Mat for Picture Frame with 18x20 opening size (Mat Only, Frame NOT Included)