2 Layer Professional Audio Rack Mount with Adjustable Crossbars2 layer layout ensures better equipment placement Top rack with 36 position adjustable crossbars for flexibility 30 vertical adjustment holes on each side satisfy various needs 6 angles are provided for your preference with a 98 rotatable design 4 swivel wheels allow smooth mobility around space 2 of the wheels can be locked for secure positioning Heavy duty metal construction offers reliable long term use Supports 110 lbs on the top layer and 220 lbs