You could easily wash a weighted blanket, they have weight limits above their washers to let you know how much they can handle. If you have a more heavy blanket you will need to be ready to spend around 8 to 12 bucks though. A 50 pounds of clothes was 12 when I went there last week.
They have very big washers and dryers, so im assuming yes. You can call them and ask them.
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