Ucanpack 3mm Thick, 31x13 Corrugated Sheets, Made in USA- White,100 Pcs Bulk Flat Cardboard Sheet for Inserts, Layer Pads, Dividers, B Flute Sheets for Shipping & Mailer

31 x 13 Inches B Flute approx. 1/8" thick 200 # corrugated board White on front and kraft paper on back with B-Flute corrugated structure.. Use as craft supplies, display inserts or to separate items All our sheets are made right here in the USA. Custom branding and size options available