Corrugated Cardboard Sheets 4mm - 3/16" Thick 8.5x11- 5 Pack. Filler Insert Pads, Brown Frame Backing Rectangular & Square Flat Boards for Art&Crafts, DIY Projects, Mailing,Dividers & Packaging

Sturdy and useful: There are no strange offensive and there are no labels to use as a base layer for any box. You can attach them to foam squares and stick them to the wall, perfect for isolating the room from noise and very sturdy. These cardboard sheets are used to strengthen the packaging and are perfect for cards, postcards and other items that you don't want to bend. These cardboard sheets are very lightweight and firm which is awesome for utilizing space. Our cardboard sheets are great if you are just wanting to cut them to a different size. The cardboard sheets are not too thick so could be cut with scissors to make crafts. Use these cardboard squares for extra protection against bending when putting important documents in the mail. It's a cost-efficient and good quality mailing supplies.