Full Technical Description: Threaded Type; Dark Gray PVC Coated Aluminum Hub, Nitrile Buna-N Sealing Ring Material; 3.25 Inch Dia X 1.94 Inch L Size; Rigid Conduit Used on; UL 94 Approval; Locknut Bonding Screw; 2 Inch Trade Size; Corrosion Resistant; Thermoplastic Insulated Throat Type; OCAL-BLUE[R] Brand; Maximum Panel Thickness 1/4 Inch; Temperature Rating 105 Deg C; HUB Model