Keep reports, proposals, tax forms, employee records and other important documents securely stowed away in sealed boxes. The stackable design helps save space in your closet or storage room. Snap-tight handles keep contents secure. Super Stacker Storage Files & Boxes part of a large selection of office supplies. Super Stacker Storage Box, 19 Liters, Sea Breeze is one of many Plastic Storage available through Office Depot. Made by Super Stacker.