How long does it take the paper check to come from the IRS?

My bank denies my despite do to wrong acct number?

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Per the IRS: Refunds that are not direct deposited because of institutional refusal, erroneous account or routing transit numbers, closed accounts, bank mergers or any other reason are issued as paper checks, resulting in refund delays of up to ten weeks. Please see the following IRS link for more information: https://www.irs.gov/uac/refund-returns