A4 Corrugated Cardboard Sheets for Packing, Mailing, Arts & Crafts. 3mm Thickness, A4 (210 x 297 mm) Kraft Board – Large Cardboard Sheets, Protective Boards (6 & 12 & 24 Pack)- LEO Design (24) – BigaMart

The corrugated cardboard sheets can be inserted into a mailer to protect against essential documents getting bent and damaged in the mail. The cardboard rectangles can also be used as a backing for craft projects or make your photo frames! You can also use them to make signs with markers or paint. Our brown cardboard dividers for boxes with side funneling each measure 6 x 9 inches and are 2-millimeter thick.

50 Pack Corrugated Cardboard Sheets Cardboard Filler Inserts for Packing Mailing Crafts, 11x17 in

100 Pcs Corrugated Cardboard Sheets Set Corrugated

LEO Design A4 Corrugated Cardboard Sheets for Packing, Mailing

50 Sheets White Kraft Paper DIY A4 Flat Cardboard Sheets for Packing, Mailing, Crafts

Compared to chipboard, the cardboard inserts are pretty lightweight so they don't make your package too heavy.

200 Packs 3.5x4.5 inch Corrugated Cardboard Sheets, Premium Corrugated Pads Cardboard Inserts Bulk Flat for T-Shirts, Shipping, Mailing, Cardboard

20 A4 Corrugated Cardboard Sheets Perfect For Shipping - Temu

ZEONHEI 60 Pack 12 x 12 x 1/8 Inch Corrugated

ZEONHEI 60 Pack 12 x 12 x 1/8 inch Corrugated Cardboard Sheets, 3mm Thick Cardboard Squares, Flat Packaging Inserts for Shipping, Mailing, DIY and

200 Packs 3.5x4.5 Inch Corrugated Cardboard Sheets

Extremely stable kraft paper

AVIDITI Corrugated Cardboard Sheets 20 x 24 (5