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13 x 17 Inch Corrugated Cardboard Sheets Flat Layer Pads White rectangle Separators Bulk Flat Card Boards Inserts for Packing, Shipping,Art,Mailing,Diy Crafts,T-Shirts，Divider Backing 50 Pack - Yahoo Shopping

200 Pack 5x7 Corrugated Cardboard Sheets for Mailers, Flat Packaging Inserts for Shipping, Mailing, Crafts, 2mm Thick : Industrial & Scientific

13 x 17 Inch Cardboard Backing : package comes with 50 piece of corrugated cardboard in total, sufficient quantity to meet your various needs; Strong

13 x 17 Inch Corrugated Cardboard Sheets Flat Layer Pads White rectangle Separators Bulk Flat Card Boards Inserts for Packing