Castell (formerly Office Furniture Solutions) is a human-centric commercial interiors supplier that outfits workspaces to help people and companies thrive. We provide new and used office furniture out of a 40,000 SF showroom and warehouse in the Metro Detroit area. We are an authorized Teknion dealer– one of North America's largest commercial work system manufacturers– offering full service commercial space planning, design, furniture, finish and fixture specification, delivery, installation, and project management. We exist to help firms make intelligent decisions on the design and layout of their workspaces and on the re-use, disposition, and acquisition of their furniture to meet the social, environmental and performance demands of today's workforce.