Ceiling Adapter, Series Premise-Trak(R), Material Non-Metallic, Color Off White, Compatible with Product Type Premise-Trak Raceways, Features For Connecting Conduit to Raceway and for Ceiling Feeds, Has Combination 1/2 in, 3/4 in and 1 in Trade Size Knockouts, Includes -, Overall Height 1 1/2 in, Overall Length 1 3/4 in, Overall Width 2 1/2 in, Standards CSA Certified, UL Compliant