Provides an additional 550 sheets. Paper sizes up to 8.5" x 14". Paper weights up to 59 lb. Bond/120 lb. Index. This paper feed unit includes a lock for securing sensitive or expensive paper. Up to 4 paper feed units may be added to the mainframe for a maximum paper capacity of 2,850 sheets, one of these must be the Paper Feed Unit TK1130 with Casters. W x D x H (inches): 15.8 x 17.1 x 5.9 W x D x H (mm): 401 x 434 x 150