Expandable length and 6 adjustable dividers, expand from 9.8~17.3 inches. Measures 9.8~17.3*10.8*3.9 inches.Store more than 40 lids, holds container lids up to 10 inches.Includes lock design to keep two parts together. Quick and easy set up, no tools needed.30 preprinted and blank writable labels make it clear what lid goes where.USPTO Patent US D935774