Panasonic HYBRID IP-PBX KX-TDA50 - Manual (Page 157)

Install a screw here.
Install a
screw here.
Reference for Wall Mounting
250 mm (9-13/16 in)
240 mm (9-7/16 in)
65 mm (2-9/16 in)
130 mm (5-1/8 in)
Install a
screw here.
120 mm (4-3/4 in)
Note
Make sure to set the print size to correspond
with the size of this page. If the dimensions of
the paper output still deviate slightly from the
measurements indicated here, use the
measurements indicated here.