Attar is the best one, there are others close.
On a good day, they have a lot to choose from, 2 foot square plates up to 3/4" thick, blocks, rounds you name it. I found the place many years ago when Metal Supermarket was closed on a Saturday, the guy looked at what I needed and said just take it not worth weighing. They have a rolling bin for each type of metal, more aluminum than anything else probably because of proximity to airport.
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