Perfect for shipping apparel, books, picture frames, artwork, mirrors and clothing. Cartons are sold in bundle quantities and ship flat to save on storage space and shipping. Overall Dimensions: 5". 32 ECT. These cartons are the industry standard. Strong, durable corrugated fiberboard. 200#/ECT-32 (Edge Crush Test) - holds up to 65 lbs. Meets most mailing and shipping carrier specifications. Contains a minimum of 30% recycled content. Staples Brand 100% Satisfaction Guaranteed. The smaller depths on these cartons provide an ideal fit for shallow products.