Professional Installers, Inc. is a Facilities Services company specializing in corporate office furniture installations, offi ... ce relocations and logistics to minimize work disruption. Pi's core union and non-union services include: office furniture installation, finish carpentry services; furniture receiving and storage; installation and reconfigurations; moves/adds/changes; project management; move management; inventory and asset management. Our furniture maintenance services include: touch-up repair and refinishing; fabric cleaning and reupholstering. Established in 1984, Pi has grown from a small project driven installation company to one of St. Louis' premier Facilities Services partner. Professional Installers Inc is a proud member of the Facilities Services Network (FSN). Facilities Services Network (FSN) comprises 20 of the best—and some of the biggest—independent commercial furniture installation firms in North America, Australia and Singapore. FSN is a not-for-profit peer group promoting professionalism, best practices and high performance in commercial furniture and facility services. read more