Nilfisk BV1100 backpack commercial vacuum cleaner hose inlet cover or lid. Previously grey in colour, they are now clear plastic. It also suits the Origin and Pullman brand of backpack vacuum cleaners
As it's light, maximise the saving on postage and buy some of the related parts below, such as dustbags and the filters or a new floor tool.
At the moment, standard postage within Australia is capped at a maximum of $20!