SystemOne Floor box. Non-metallic riser. The cast iron floor box construction provides durability and corrosion resistance for on-grade applications. Oversized 1.5 inch NPT threaded conduit access holes for low voltage. 1 inch NPT threaded conduit access holes for power. Easily installed, aesthetic and configurable floor box solution for open floor plans that require both power and data services. The Hubbell SystemOne universal cover mounts directly to the floor box riser, eliminating the need for an additional adapter collar. Convenient cubic inch (cm3) capacity markings on interior of box. Levelling feet provide before pour adjustability. PVC riser allows a simple saw cut for adjustment after pour. Supplied with concrete cover and closure plugs (where applicable). Designed to accommodate multi-service applications with the wide offering of Hubbell SystemOne sub-plates. Provides an economical, easy to install in-floor delivery system for large, open plan spaces. Supplied with concrete cover, conduit reducers and conduit hub plugs.