Located in Ferguson, Mo., Negwer Materials supplies wall, ceiling and flooring products. Maintaining 10 locations in central and eastern Missouri and central and southern Illinois, the companies full-line of products includes acoustical systems, doors, frames and hardware, exterior wall systems, fasteners and tools, interior wall systems and light guage steel trusses. NMI Architectural Products, a division of the company, provides a single source of information and a more concentrated level of service to architects, interior designers and owners. Negwer's Door, Frame and Hardware Division stocks a complete line of hollow metal and wood doors, frames and hardware. Negwer Materials is among the largest supplier of interior construction products in the Midwest.