Abstract: An Insulated Glass (IG) line comprises a washer for washing lites; a spacer applicator for selectively attaching spacers to lites downstream of the washer; an assembler for coupling multiple lites with intervening spacer downstream of the spacer applicator; an unloading station for removing finished IGUs from the IG line downstream of the assembler; and a buffer storage unit upsteam of the washer and having i) at least one storage rack defining a plurality of lite storage locations, ii) a storage rack feeding unit configured to place lites into any storage location of each storage rack, and iii) a storage rack unloading unit configured to take lites from any storage location of each storage rack. The Insulated Glass (IG) line further includes a dynamic batch-less direct feed cutter upstream of the buffer storage unit.