This video shows how to put up the 60 x 90cm or the 140cm octagonal softbox with removable grid. This softbox has an inner diffuser as well as an outer diffuser along with a grid that can be used if required. It is only available in the UK an EU at the present time. www.smick.co.uk http://www.smick.co.uk/sonline/softbox/60-x-90cm-softbox.html http://www.smick.co.uk/sonline/octagonal-140cm-professinal-softbox.html