Specifications include, but are not limited to: Contractor shall furnish all materials, labor, tools, equipment, supervision, insurance, permits, etc. required to specify, furnish, make modifications, and install one rooftop air-cooled air conditioning unit in accordance with this specification to replace one existing 50-ton unit. This unit serves the construction building of the Grand Glaize Yard located at 1033 Grand Glaize Parkway, Valley Park, Missouri 63088. The work shall include removal of the existing unit; all necessary modifications of all existing structures including the existing roof curb and ductwork, filters, condensate drain piping, dampers, thermostats, diffusers, grilles/ registers, and all associated hardware as required per this specification and for proper installation and operation of the system. The existing electrical supply is 480V three phase.