This model features the new tube filtration system, which cleans with a 99% capture rate at 1 micron There are 30 cloth filter bags inside which dump material into two trays to be emptied or vacuumed outThe 48"" x 96"" top is used for large parts or 3 to 4 operators Casters are a standard feature, with 4 - swivel casters, two that lock Tops are ¾"" medium density fiber board covered with a very durable sprayed-on urethane cover, non-marring, soft enough not to effect product being sanded. Size : 48"" x 96"" Height: 36"" CFM : 4300 Motor : 3HP/3PH – TEFC Voltages : 230 or 460 volt, must specify Sound Level : 81 Dec Weight : 1050 lbs