GLACIER CIRCULATION FURNITURE Corner Riser Glacier circulation furniture is great for libraries, school libraries, mail rooms, circulation rooms and more. This selection of circulation furniture is ideal for storing, collection and recirculation of books, magazines, mail and much more. Riser unit easily attaches to top of Corner Unit to provide increased work space. Provides a place to stack library materials or functions as a stand-up writing surface. All-wood construction provides the upscale look of professional quality. Thermally fused melamine laminate surfaces are water, scratch, stain and burn resistant for long lasting durability. Solid-core, industrial grade particleboard offers superior strength that resists warping. Easy assembly. 1 Year Limited Warranty. 37.00 L. 33.00 W. 5.00 H.