SystemOne sub plate. This modular solution utilizes application sub-plates that install into one universal cover for Hubbell SystemOne floor boxes and poke-through. Hubbell SystemOne is an innovative system that provides consumers with the flexibility to create personal solutions for the most demanding multi-service applications for both flush in-floor boxes and fire-rated poke-through. Hubbell SystemOne features a unique universal cover assembly and a wide variety of application sub-plates that install on both Hubbell flush floor boxes and fire-rated poke-through. Whatever the application, Hubbell SystemOne delivers a consistent, aesthetic and functional solution for applications in-the-floor or through-the-floor for power, voice, data and A/V requirements.