20 x 20 x 20 Shipping Box, 200# / 32 ECT - Supply Box
20 x 20 x 15 32 ECT 20 bdl./ 120 bale | Brandt Box
20" x 20" x 2" Flat Boxes
20 x 20 x 20" Multi-Depth Corrugated Boxes | Carton
20 x 20 x 20 200#/32 ECT Multi-Depth 18, 16, 14" 20 bdl./ 120 bale | Brandt Box
Amazon.com: Box Packaging Heavy-Duty Double Wall Corrugated Box, 20" x 20" x 12", Kraft - Bundle of 10 : Industrial & Scientific
Amazon.com: 20" x 20" x 20" White Corrugated Cardboard Boxes Pack of 10 for Shipping Packing and Moving by Choice Shipping Supplies CS202020W : Office Products
20" x 20" x 15" Corrugated Cardboard Shipping Boxes 20/Bundle
Amazon.com: BOXES FAST 20x20x36 Tall Corrugated Boxes, Tall, 20L x 20W x 36H, Pack of 10 | Shipping, Packaging, Moving, Storage Box for Home or Business, Strong Wholesale Bulk Boxes : Industrial