Fan Blade - Rear (Square Bolt Pattern) Models 133, 135, 140, 148, 152, 155, 158, 165, 230, 240, 250, 253, 342, 350, 352, 355, 360, 550, 5500, 560, 5830, 5840, 5860, 5870, 6030, 6040, 6060, 6070, A3.153, AD3.152, AD4.203, Advantage 55, Advantage 60, AT3.152, Blizzard 50, Blizzard 60, C4500, C4830, C5500, C5830, CF6030, CF6060, Globus 50, 20B, 20E, 20F, 30E, 30H, 40, Rex 60