20 x 20 x 36" Tall Corrugated Boxes. Tall Corrugated Boxes are end loading for easy insertion and sealing. May be used in place of mailing tubes. Ideal for shipping irregularly-shaped items, such as lamps, golf clubs, shelving, fishing rods and umbrellas. Boxes are manufactured from 200#/ECT-32 kraft corrugated. Corrugated boxes are reusable and recyclable. Cartons are sold in bundle quantities and ship flat to save on storage space and shipping. Proudly made in the USA