MSI Andover Hatfield Surface ReducerFinishing molding for Andover Hatfield Surface MSI Andover Hatfield Surface Reducer covers the expansion gap, transitions floor to wall, or terminates a flooring run with the matching reducer profile. Quarter rounds, stair noses, T moldings, reducers, and end caps complete a flooring install at room transitions, stairs, and perimeter expansion gaps. Sold by the piece in standard length, sized for direct install with construction adhesive no specialty