Our contractor is only here through next week. The 10" deep shelves we already bought are too deep, he says. I need shelves that will let me stack folded bath towels on them. Would your 6" deep shelves be wide enough for that?

If I purchased this weekend, is there any chance I could get them by Thursday at the latest? I'm looking for 3 dark (almost black) shelves that ideally would between 20" to 24" wide in length.