WPX48-NL2MP - 48 Port 2 Pole Speakon Wall Plate

Rear terminals are 3/16" 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?WP2SPK48

WPX48-NL2MP Front View

Front

WPX48-NL2MP Rear View

Rear