Features this unit supports a4 a5 long edge first folio letter legal and oficio sizes only paper 16 to 36 lb 60 to 135 gsm may be used from this unit install below any other trays paper size paper and tray present and tray low and tray empty sensing are supported if the product configuration contains the 2 100 sheet tray the optional caster base is required the spacer cannot be used with the 2100 sheet tray