MPQ2121 Features: * 3.5"" EMT insulating bushings * Protect wires and cables * Protect cables from abrasion by EMT * Examples are power, cable TV, computer datalines, telephone / modem, audio / visual cables, alarm and security systems * Meets NEC article 300-15C requirements * Listed for use in environmental air handling spaces per 2005 NEC code requirements 300-22C * Polyethylene rated at 90 degree C Dimensions: * Dimension: 3.5"" H x 3.5"" W Warranty: * 1 Year warranty