Hinged lockable units with lock-in-place casters. 16 bins included. 4 each of red, blue, yellow and clear. Premium birch hardwood construction. Caster mounted. Fully assembled. Limited lifetime warranty. Each side measure 122cm W x 30cm D x 97cm H (48"W x 12"D x 38"H). Open, the entire unit measures 243cm W (96"W).