A modular lift assembly configured for attachment between two
substantially parallel support beams includes a chassis, at least one
lift component attached to the chassis, a telescoping stiffener, and at
least one attachment assembly. The chassis has a plurality of grooves
formed in one surface thereof. The telescoping stiffener is disposed in
at least one of the grooves and engages facing surfaces of adjacent
parallel support beams. The attachment assembly is disposed in another of
the grooves formed in the chassis for engaging at least one of the
adjacent support beams.