Sterilite 17611704 60 Quart 57 Liter Clearview Latch Wheeled Underbed Box, Clear Lid and Base with Sweet Plum Latches and Wheels (4 Pack) 52 in. a redesign of the entire a redesign of the entire enclosure was updated resulting in a seamless skirted design which gives an overall uniform and clean look Photoelectric sensing alarms may detect visible fire particles (associated with slow smoldering fires) sooner than ionization alarms The indexed lids allow same size storage boxes to stack neatly on top of each other to use vertical storage space efficiently The clear base and lid allow contents to be easily identified from any angle