The requirement is for a contractor to remove and replace existing windows in Building 13 (Barn) at the Honeybee Breeding, Genetics & Physiology Research Laboratory with energy-efficient windows matching those installed in Buildings 11 and 22. The work includes replacing eight 3-foot by 3-foot windows and one 2-foot by 2-foot window on the south elevation, plus two 5-foot by 3-foot windows and four 3-foot by 3-foot windows on the north elevation. New windows must be installed plumb, level, weather-tight, and in accordance with manufacturer recommendations. This acquisition is a total small business set-aside under NAICS 238350 with a size standard of $19 million.