B) a key / locked C) stops / open D) a rubber insulating device / closed See the answer below. Answer: C Section 490.38 of the 2017 NEC covers the requirements for door stops and cover plates. As ...

Tony Bulman, president of Fantom Door Hardware Canada, imports the Fantom Doorstop Solution, a door stop that uses rare-earth magnet technology to keep doors in place and prevent them from slamming.