Alpha OH201 1 Gang Flush Housing - Steel

1 Gang Flush Housing - Steel Use with OF201 /G Series Frame. The Alpha Communications® / TekTone OH201 backbox housings are made of heavy gauge galvanized steel. They designed to be used aluminum panel and master annunciator frames.These backboxes a variety apartment entry intercom video lobby modules, as well nurse-call, emergency-call specialty modules. is open at back housing, allow for wire entry.