Rev. 3 - 06/02
ARCHITECTS' AND ENGINEERS'
The adaptor plate(s) shall be Alpha Communica-
tions® Model AP777 (or AP777B) or approved
equal and shall be large enough to cover the area
occupied by the previous intercom unit. The adaptor
plate shall be made of 22 gauge cold-rolled steel,
painted in a White powder coat paint finish. The
adaptor plate(s) shall be punched to cover the existing
back box, and for the apartment intercom (or video-
intercom) station to be mounted onto the adaptor
plate(s). If required, contractor shall paint the adaptor
plate(s) to match the existing wall finish.
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AP777 and AP777B
The Alpha Communications® AP777 and AP777B adaptor plates
are designed specifically to cover existing oversized apartment
intercom back boxes and other existing wall openings.
Once the adaptor plate is affixed to the wall, you can install your
open-voice or handset apartment intercom station or surface
mount video-intercom station directly onto the adaptor plate.
The model AP777 features two (2) mounting holes 10.50" (267mm)
on-center, top-to-bottom, to enable you to easily mount the plate
over an existing 777 series flush back box. In addition, the model
AP777 also features a large (center) hole for wire access and four
(4) pre-punched holes for mounting common apt. intercom sta-
tions and handsets.
Installation is quick, easy, attractive and eliminates the need for
plastering and painting over the existing hole.
Model AP777B is the same as the AP777, except there are no
mounting holes on the front of the faceplate. This enables you to
punch or drill any special holes you may need, or to leave the
faceplate totally blank.
Custom-sized adaptor plates are also av