Recently, efficiency of office has been rapidly improved due to network system as well as office automation. FREE PLAN FLOOR PIT 40 is a functional system that puts each wiring into pit of panel. Since it is lightweight and has simple structure, it is suitable for repair and remodeling and can be quickly installed. Constructor may feel it efficient in terms of execution since it does not cause any interference to business of office. It also assures simple maintenance since it enables to easily cope with partial change of floor layout or repair, remodeling of office in the basis of unit. Japanese Environment Association ECO-MARK Secretariat Certification ·Environment preservation type of product No. 01118332 Ecosystem-oriented materials maintains office automation..