Surface Mount Conduit Box for 8138/8128/8028/8201/3228/3226/1128 products. The 3100 is a standard double gang box measuring 4.9″ wide, 5″ high and 1.4″ deep.

Note: Algo 8201/8028/3228/3226 doorphone/intercom products come supplied with a Surface Mount Bracket. The 3100 is available where a conduit connection is required.