Poke-Thru Controlled Receptacle Nonmetallic Slide Holder Assembly with Controlled Receptacle Markings. Markings are located in a recess pad and are permanent indicating the duplex receptacle below has been wired up to comply with 2014 NEC(r), CA Title 24 and ASHRAE Energy Efficiency Standard 90.1. On circuit A duplex receptacles are controlled. Slide holder to be used with the RC4ATC & RC4CTC units. Finish - Black