Tripp Lite's 2-9USTAND tower-kit accessory offers a convenient method of installing a Tripp Lite rack / tower UPS systems in a small-footprint upright tower configuration. Pair of adjustable tower stands securely support single or multiple rackmount UPS, battery packs and other accessories in 2U to 9U widths. Expands from 10U to 18U with the purchase of an additional set of 2-9USTANDS. Compatible with Tripp Lite SmartOnline and SmartPro rack / tower UPS models specifying the use of this accessory.