SKU: D301_Series_Pacific_Electronics
D301 Pacific Full Size Series Intercom Entry Panel Add-On Button Panel (0-24 Buttons) 16-7/8” x 4

(D301) Series Pacific Electronics Add-On Push Button Panel (Buttons Only, No Speaker) is designed for indoor use as it has Plastic button caps. The panel is made of extruded aluminum.
Recessed mount to RF frame, Surface mount to SF frame
Electrical: Screw type terminal push-buttons are removable from the back. 
No solder connections are required.

Full Size Panel Dimensions H” x W”
Panel only dimensions (without frame) are 16-7/8” x 4”
Recessed Frame with single panel dimensions are 19-1/8” x 6-1/4”
Surface Frame with single panel dimensions are 17-1/8” x 4-3/16”