Model Catalog: RIGHT GEL PAD # 440C1012 (Lot serial: Right Gel Pad: #093990); Model Catalog: LEFT GEL PAD #440C1011 (Lot serial: Left Gel Pad: #093984); Model Catalog: RIGHT GEL PAD # 440C1012 (Lot serial: Left Gel Pad: #093984); Model Catalog: LEFT GEL PAD #440C1011 (Lot serial: Right Gel Pad: #093990)