Specifications include, but are not limited to: Contractor to provide all labor, materials, equipment to access the work, and supervision necessary to remove and replace the existing clerestory windows at the Lakeside Nature Center, 4701 E. Gregory Blvd., Kansas City, Missouri. The work includes engineering design of the new curtain wall windows, utilizing a Missouri Licensed structural engineer, demolition and removal of Pella wood windows, any necessary blocking, shop drawings, installation of a new clerestory window curtain wall system, perimeter flashing, perimeter sealant, and possible temporary storage of new system while being installed. Contractor should have five years of experience installing similar curtain wall systems. The existing metal roof needs to be protected from damage. The work does not include replacing any wood trim