A heating ventilation, and/or air conditioning (HVAC) system includes a support structure having a mounting rail, a first mounting bracket coupled to the mounting rail and configured to be adjustably positioned along a first axis of the mounting rail, and a second mounting bracket directly coupled to the first mounting bracket. The second mounting bracket is configured to support a fan motor mounted thereto, the second mounting bracket is configured to be adjustably positioned along a second axis of the first mounting bracket, and the second axis of the first mounting bracket is transverse to the first axis of the mounting rail.