This collection is a library favourite, including mobile book trolleys and kinderboxes, the storage and display solutions are endless. Here at Willowbrook all trays are supplied with the units and arrived fully assembled. Our Library Trolley Units are fully mobile with locking castors and deep book wells. Made from 18mm solid wood MDF, which is scratch resistant and long lasting, you will receive nothing but high quality from us. All of our Library Trolley units feature a 5 year guarantee.