The WILD40™ Seven Slot 3U OpenVPX Chassis is an OpenVPX-compatible chassis capable of accepting up to six 3U tall by 160mm OpenVPX Payload Front Plug-in Modules (FPMs) and one 3U tall by 160mm OpenVPX Switch FPM and up to seven 3U tall by 80mm Rear Transition Modules (RTMs). Plug-in Module slot spacing is 1″.