Ironwood's Glacier Series Modular Circulation Adjustable Shelf Unit complements the look of any library with an attractive wood-grain laminate that resists scratching, peeling and discoloration for years. The solid particleboard core ensures a lasting frame. Grommets on every shelf make cord management simple. Adjust the middle shelf to best fit your books or equipment. Available in multiple finishes. Choose from several sizes with or without locking doors.