Stay in control of your account. Use the ACH Block & Filter feature to monitor any ACH debits posting to your account. It’s an easy way to prevent unwanted ACH activity on specific accounts. 1st National Bank’s ACH Block & Filter Feature-at-a-Glance ACH Blocks Simplest of all products to use! You notify 1st National Bank that ACH debits should not be allowed on certain accounts. We don’t allow any ACH debits, even those that are authorized, to post to your account. Recommended for all accounts where ACH activity is not likely to be used. ACH Filters Provide 1st National Bank with a list of companies authorized to debit your accounts. We will filter any incoming ACH debits and allow through only those are on the list. Prevent unwanted ACH activity on specific accounts. Ready to easily monitor the ACH activity in your account? Get in Touch Today!