I'd probably use some m16-m20 threaded rod, bonded into the wall with resin.
There might be heavy duty floating shelf brackets that would be better as my suggestion means having to buy a 16-20mm wood and masonry drill bit, threaded rod and resin. It might work out quite expensive.
There might be heavy duty floating shelf brackets that would be better as my suggestion means having to buy a 16-20mm wood and masonry drill bit, threaded rod and resin. It might work out quite expensive.
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