Dual stand only, designed for the Dual Scale-Up Series™ reactors. Stand features: 100ml to 2000ml capacity, lightweight aluminum, adjustable leveling feet and six (6) quick adjustment rod-holding brackets for up to 5/8in (16mm) diameter rods. Base dimensions are 19-1/2 x 30in (DxW) with 38in height. Not included are 6442 family of mounting clamps nor 11177 family of ring supports that must be sized to the supported vessel.