Thanks for the tips. I'd need probably about 30 X 30 cm to be safe. Our dump won't let us take parts off things. You have to buy the whole thing from the Lifeline Shop next door and they charge like a wounded bull. mad

I wonder if the front loader washing machines would have good enough ventilation? The holes need to be around 4mm diameter and fairly closely spaced, like the old Briggs & Stratton screens.

[Linked Image]
[Linked Image]