WPX48-NL4MPUC - 48 Port 4 Pole Speakon Wall Plate

Rear terminals are 1/4" male spade connectors for soldering.
As an alternative to soldering you could use crimp female disconnects, found HERE

Plate Specs & Info
Height x Width10.00" x 16.75"
Mounting Info?Mounting info found Here
Old Stock Number?WP4SPKHC48

WPX48-NL4MPUC Front View

Front

WPX48-NL4MPUC Rear View

Rear