Skylights and windows from PALMER -DONAVIN MANUFACTURING help residents of the Hoosier and Buckeye states see a little better. The company operates four divisions -- building materials; heating, ventilating, and air conditioning (HVAC); kitchen and bathroom cabinets; and wood and laminate flooring -- through about 10 locations in Ohio and Indiana. Building materials include doors and windows, roofing, siding, insulation, gutters, fences, and decks. PALMER -DONAVIN carries such HVAC brands as Rheem and Armstrong Air, as well as cabinets from Wilsonart, Cardell, and Hartson-Kennedy. Founded in 1907 by Fred Palmer and George Donavin, the company got its start making sheet metal and tinware.