Switch 7754 and Switch 7700 4-Slot Fan Assembly
3com 3C16871, 17.2 x 18.9 x 13.9" (436 x 480 x 352 mm)
3com 3C16871. Dimensions (WxDxH): 17.2 x 18.9 x 13.9" (436 x 480 x 352 mm)