Those bars could easily be replaced with PVC piping that you just need to cut to the right length and then keep sturdy with a base. Description from I searched for this on

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T grid metal 4 ft bar for drop down ceiling used as paint ledge. Only $2.50/piece! Hang on wall with screws in studs

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Simple & effective DIY hanging craft paint storage makes it easy to see all your paints at once and also adds some fun color to your walls.

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