A clear & printable site about paper sizes, includes ISO Standard A, B, C printer paper size, poster, postcard, envelope, US paper and other normal sizes
Sub-merchant must not (i) require a cardholder to complete a postcard or similar device that includes the cardholder’s account number, card expiration date, signature, or any other card account data in plain view when mailed, (ii) add any tax to transactions, unless applicable law expressly...