Description: Orbit's Concrete Floor Box features a round PVC floor box and PVC adapter ring for installing floor box covers in concrete. Concrete Floor Box includes 4 reducer plugs and a cap for sealing box and unused outlets when pouring concrete. Adapter ring (sold separately) allows for installation of round pop-up floor box covers. Features: - PVC Box for Concrete Slab Installations- PFLB-R-C Minimum Depth 3.75š½- PFLB-R-C includes a cap and 4 reducer plugs (1" x 3/4")- Adapter ring (PFLB-AR) allows for installation of 1-Gang Round Pop-Up Floor Box Covers (sold separately) Box Dimensions: Outer Diameter: 5" Inner Diameter: 4-5/8" Height: 6" Volume: 90 Cu. In. Side Openings: 1" - including (4) - 1" to 3/4" reducer plugs Certifications: CAT NO UPC STD PKG MASTER CTN PFLB-R-C 8-35243-02942-2 10 - PFLB-AR 8-35243-02943-9 10 100