Extra-large, open-end expansion envelopes are specially designed to expand up to 1"" to accommodate bulky mailings. Center seam design provides extra strength for secure deliveries. 32 lb., natural Kraft stock prevents your private items from showing through. Envelopes are perfect for statements, invoices, small items and more.

Heavy-duty storage boxes feature a liftoff lid for easy access to letter-size or legal-size files. Use hand holes to move and carry. Boxes are made of sturdy corrugated cardboard and have a 650 lb. stacking strength. Each box contains a high percentage of recycled material.

Light-duty storage boxes offer liftoff lids for easy access. Ideal for storing and transporting files. Use boxes to store letter-size or legal-size files. Each box offers a 350 lb. stacking weight and with a high percentage of recycled material.

Medium-duty storage box is designed for use with or without shelving with a stacking strength of 525 lb. Box holds letter-size or legal-size folders. The liftoff lid offers easy access. Hand holes allow you to carry it easily. Quick setup feature saves assembly time. Storage box is made with a high percentage of recycled material.

These extra-large, open-end catalog envelopes are perfect for storing and transporting maps, film, artwork and large presentations. Center-seam design provides extra strength for secure deliveries. Envelope paper is made with post-consumer material to reduce its environmental impact.