*RICSP-5200SG,RICSP-5210SFG,RICSP-5210SRG: 550-Sheet Capacity. TK1090L includes a Lock to secure sensitive or expensive paper. For desk placement, 1 PFU TK1090 may be added. For floor placement, up to 2 PFU TK1090 may be stacked. Installation of 3 PFUs requires the assistance of a technician.