Metal Conduit Tee Box 20mm Galvanised, have used before, great for the garage electrics ,robust and secure for Garage walls.
Shame you have to buy the lid separately, I would rather they came in a pack like the plastic ones however it did the job perfectly once the lid was sourced.
Decent boxes at a very good price compared to other places. They seem to be made well enough and the threads are cut well. Top tip though - if you are cutting the M4 brass screws to use for the earth lug then put these in before you put the box on the wall, as it's much easier to do on the bench!!
