Mounting dimensions: W=19", H=3U, Static load: 60kg. Use ARAS rails to mount in a RACK cabinet, depending on its depth - ARAS600 - for RACK cabinets, depth: D=600 - ARAS800 - for RACK cabinets, depth: D=800 - ARAS1000 - for RACK cabinets, depth: D=1000.