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) 16x20 Frame. BulletPoint3 : This mat will fit a 12x16 Photo. Actual opening size will be 11.75x15.75. 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. BulletPoint5 : This wrinklefree fabric is 9 oz woven cloth, heavier and more exquisite; when lights come from backside, it shows backlit, it is good for indoor and outdoor. We have another option of Tension fabric banner, which is 8.8 oz knitted cloth, cost effective; knitted fabric has tiny holes so backlights penetrates through slightly, it is better for indoor. Clicking below link for Tension fabric version: https://www.amazon.com/dp/B0C415DMSC?ref=myi_title_dp&th=1 CareInstructions : Machine Wash CareInstructions1 : Machine Wash CareInstructions2 : Hand Wash Only Color : Cream Linen - 1 Pack ExternallyAssignedProductIdentifier : 6408220885188 ExternallyAssignedProductIdentifier1 : 0710406933115 ExternallyAssignedProductIdentifier2 : 710406933115 IncludedComponents : Wrinkle Free Fabric Backdrop Banner with 3'' pole pocket on top and bottom hemmed IncludedComponents1 : banner IncludedComponents2 : a rope ItemDisplayDimensions_Length : 20 inches ItemDisplayDimensions_Width : 16 inches ItemDisplayWeight : 0.28 pounds ItemName : 16x20 Cream Linen/Ivory Custom Mat for Picture Frame with 12x16 Opening Size (Mat Only, Frame NOT Included) - 1 Pack ItemPackageDimensions_Height : 5 inches ItemPackageDimensions_Length : 23 inches ItemPackageDimensions_Width : 20 inches ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : photo-mat-boards Manufacturer : ArtToFrames Material : 4-Ply Acid Free Cardboard ModelNumber : WB8A1-QZB-180x110-AN3492 NumberOfItems : 1 OccasionType : Trade show, Event, Party, Wall exhibitor, Wedding OccasionType1 : Bridal Shower OccasionType2 : Christmas OccasionType3 : Birthday OccasionType4 : Wedding OccasionType5 : Baptism OccasionType6 : Engagement OccasionType7 : Graduation OccasionType8 : Baby Shower PackageLevel : unit PartNumber : Pack_1_MAT-181-16x20 ProductDescription : Fits a 16x20 Frame, and a Photo 12x16. For custom cuts and designs please reference !~Product SKU # - - Pack_1_MAT-181-16x20~\ ProductSiteLaunchDate : 2024-03-14T14:56:08.643Z Size : 16x20 Style : Custom SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 WarrantyDescription : No