Nilfisk GM200 GM300 GM400 vacuum cleaner pre-filter grill. This square grid holds the pre-filter in place behind bag but in front of motor.
As it's light, maximise the saving on postage and buy a couple of packets of dust bags, or a hose or a new floor tool, or some other accessories! See in related parts below.
At the moment, standard postage within Australia is capped at a maximum of $20!