Product Description The Kendall Howard Patent Pending XL Rack Helper was created to help network installers support extremely heavy rack components. Unlike the standard Rack Helper which only gives 3.5" of support, the XL extends 11" into your rack providing unsurpassed holding power. Simply install this device just below any heavy component. Next slide your component on top, attach with screws and your finished. No more running around trying to find someone to help hold up your server or UPS while you attempt to line up the mounting holes and tighten in the screws. An absolute must for all network installers.