The insect mesh for the outlet of my ducted shower fan is broken (no - I don't know how or why, the fan was broken too but I've just replaced that with a 100m Xpelair - which came with a nice but unmeshed flapped outlet).
The outlet vent is 5.25" square. Ideally I just want a similar sized, black, piece of screen mesh which will let air out, keep insects out and will not rot or corrode.
I must be searching for the wrong thing but I can find rolls of the stuff or some vents with it inbuilt but not some sensibly priced/sized pieces. Any pointers please?