Most popular replacement parts for Igloo coolers. 76901 and 76921 are sold in pairs. 76881: Fits Size (Qts.): 28, 36, 40, 48, 54, 72, 94, 128, 162 76891: Fits Size (Qts.): 28, 36, 40, 48, 54, 72, 94, 128, 162 76901: Fits Size (Qts.): 28, 36, 40, 48, 54, 72, 94, 128, 162 76921: Fits Size (Qts.): 28, 36, 40, 48, 54, 72, 94, 128, 162 76931: Fits Size (Qts.): 28, 36, 40, 48, 54 76941: Fits Size (Qts.): 72, 94, 128, 162 76951: Fits Size (Qts.): 28, 36, 40, 48, 54