Is the word of necessary? For example:
Take the towel off of the counter.
Take the towel off the counter.
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It is correct and acceptable in either case. The use of the word 'of' in that case is not necessary, but when used I believe it to be superfluous.
Note: Take consideration that TrevorD advises against the use of off of because in British English, since it is neither correct nor acceptable. I am not British so I cannot speak to this, but keep it in mind. I have definitely heard this in American English though. e.g. Get your hands off of my stove!