Nilfisk GS81 and GM81 and Tellus GA71 industrial vacuum cleaner.
Discontinued now, however, this was and is a very good machine. Also very popularly used with HEPA filter for asbestos use, as can be seen at the rear of the picture.
HOWEVER, MANY PARTS ARE STILL AVAILABLE!
Maximise the FREE FREIGHT offer on this item, if you choose a replacement machine from the choice below on our website, and anything purchased along side it, such as vacuum cleaner dustbags, filters, wands, round brushes or a hose will have free freight too!