40 PCS Corrugated Cardboard Sheets, 12 x 12 Inches Flat Cardboard Sheets, Square Card Board Sheet, 1/6”Thick Cardboard Insert for Crafts, Packing, Mailing, Art Project (Kraft Brown)
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Dimension: Each flat cardboard sheet is 12”x 12”and 1/6”thick, A-Flute; Can be cut to your desired size and shape
Cardboard Sheet: The square card board sheets is made of sturdy 0.16”(4mm) thick corrugated cardboard against bending; This cardboard perfect to add extra protection when shipping