1 Gang Flush Housing - Steel Use OF191 Series Panel Frame. The Alpha Communications® / TekTone OH191 flush backbox/housings are made of heavy gauge galvanized steel. They are designed to be used with the OH191 aluminum panel frames. These backboxes/housings are used with a variety of apartment entry intercom and video intercom lobby panel modules, as well as specialty and annunciator modules. Electrical knockouts are provided on the top, bottom and back of these units.
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1 Gang Flush Housing - Steel Use OF191 Series Panel Frame. The Alpha Communications® / TekTone OH191 flush backbox/housings are made of heavy gauge galvanized steel. They are designed to be used with the OH191 aluminum panel frames. These backboxes/housings are used with a variety of apartment entry intercom and video intercom lobby panel modules, as well as specialty and annunciator modules. Electrical knockouts are provided on the top, bottom and back of these units.
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