Example implementations relate to a dual-sided fan tray assembly of an electronic system. The fan tray assembly includes a housing having a front panel, a back panel, and a pair of side walls coupled to the front and back panels. The fan tray assembly further includes a handle assembly pivotably connected to the pair of side walls such that the handle assembly is at least rotatable around the housing to at least first and second positions spaced apart from each other. When the handle assembly is rotated to the first position, the fan tray assembly is slidably insertable into a chassis of an electronic system with the front panel facing the chassis to install the fan tray assembly to the electronic system. When the handle assembly is rotated to the second position, the fan tray assembly is slidably insertable into the chassis with the back panel facing the chassis.