jim wrote:
The mesh I'm thinking of is the grey zinc plated type of flat sheet
which is covered in diagonal rows of holes, each maybe around 1/8in/3mm
dia, punched in it.

You used to see it used over things like larder windows where a
reasonable barrier against bugs, but also ventilation, was needed.

Extruded mesh will not do, as my application needs a flat sheet without
bumps and a lower proportion of hole space than you find with normal
mesh.

I need a piece min size around 250mm x 400mm but larger ideally. Could
maybe join 2 smaller pieces if no other way.

Anyone know what this mesh is called?

Any suggestions as to possible sources please?


Have you tried B&Q? They have various metal sheets/meshes/grilles in
small quantitities in the larger branches.