lt;stronggt;UNV751204lt;/stronggt;lt;BR/gt;Universal Economy Storage Boxlt;BR/gt;Features heavy-duty construction for lasting box strength. Works with or without shelving for versatile storage. Secure string and button closure keeps documents dust/dirt free. Box Type: Storage Materials: Corrugated Fiberboard Strength: Medium-Duty.lt;BR/gt;lt;BR/gt;lt;stronggt;UNV21200lt;/stronggt;lt;BR/gt;Universal Economy Storage Boxlt;BR/gt;For copiers. Great for everyday use. Acid-free for archival quality. This product was made from wood that came from a certified managed forest. Size: 8 1/2 x 11 Paper Colors: White Paper Weight: 20 lb Sheets Per Unit: 5,000.