"8 Slide Rack capacity, used to identify slide racks when used with the 4 Rack Timer Units (1-4) and (5-8) on the StatLab High Capacity Slide Dryer (SI-SDR-HC). Each slide rack entry is numbered which corresponds to the rack number on the 4 Rack LEAN Timer ensuring that each slide rack has exactly the correct time in the drying chamber. Compatible with slide racks from market leading staining instruments; Leica, Sakura and Thermo Scientific. Made from stainless steel. Contains one rack. "