Activity table shapes are ideal for collaborative group activities and can be arranged in various configurations for shared connectivity. Tables with T-Mold edge are made of 1-1/8" particle board core, and LockEdge are made of 1-1/8" MDF core with high-pressure laminate top, and phenolic resin backer. Constructed with a galvanized steel stretcher bar attached underneath for extra stability. Premium Elliptical Leg adjusts from 15" to 24", 22" to 30" or 30" to 43" table surface height. An optional book box, approximately 15"W x 11"D x 4 1/2"H, sold separately. Backed by a limited lifetime warranty. Contact your School Specialty Account Manager for a free quote.