Full Technical Description: Threaded Type; PVC Coated Zinc (Hub), Nitrile (Sealing Ring) Material; 3.75 Inch Diameter X 2.56 Inch Length Size; Conduit Used on; UL 94, CSA Approval; 2-1/2 Inch Trade Size; Corrosion Resistant; Thermoplastic Insulated Throat Type; OCAL-BLUE[R] Brand; Color Dark Gray; Maximum Panel Thickness 1/4 Inch; Temperature Rating 105 Deg C; HUB Model