Part Number: 143N6191-8 (Door counterbalance)Part Number: 258T1100-10 (Door counterbalance)Part Number: 258T1100-5 (Door counterbalance)Part Number: 258T1100-7 (Door counterbalance)Part Number: 258T1100-9 (Door counterbalance)Part Number: 258T1190-6 (Door counterbalance)