Bushfire prone zones require that openable windows must be screened with corrosion-resistant steel, bronze or aluminium mesh with an opening of less than 2 mm x 2 mm (AS 3959-2009).
Whenever two different metals interact there is a risk of corrosion. The tests (AS 2331.3.2 and AS 2331.3.1) to show corrosion-resistance are the acetic acid salt spray test and neutral salt spray test.
The National Construction Code (NCC) (BCA 2013) requires that window openings be either restricted or screened, in certain circumstances, to prevent children falling. Screens that resist an outward horizontal action of 250 N meet the code and mean that window restrictors, that prevent the window being open more than 125mm, can be removed. Screens that have been tested and passed AS5039/5040 are deemed to comply with NCC requirements. Barrier screens must either be type tested in a NATA certified testing facility, or tested onsite by the installer.
The mosquito protection test tests a screens ability to keep mosquitoes out over an extended period of time.