Optima's M2, Military and Seismic Ready Cabinets have been lab and field tested to insure that mission critical equipment remains up and running during harsh deploment events. The M2's double walled extrusion offers the highest strength-to-weight ration design avaiblabe and protects the equipment during the full force of a seismic or other shock/vibration event. Telecom, computer, military and aerospace systems require today's cabinets to handle denser equipment loads. M2 Frame (Bezel) Design, Double wall Extrusion.Features:Heavy duty single or double walled extrusionsHeights: 12U, 16U, 20U, 24U, 30U, 35U, 40U, 44UInternal reinforcing corner keys, four way crimped and weldedCorner sockets and corner members welded to meet: ANSI 329, Bellcore TR-63Universal hard mounting to floor - bolt down base (ceiling or wall bracing optional)Vibration resistant hardwareIndependent, removable side, top panel, bottom panel and doorsIntegrated cable management, power conditioning and cooling optionsStandards Meet:NEBS Leval 3 zone 4 - SeismicGR-63-COREMIL-STD: 901D - Shipboard shock/vibMIL-STD: 810F ShockMIL-STD: 167 - VibrationMIL-STD: 461 - EMC