air filter factory 2-pack replacement for procare pcwf813, pcwf-813 humidifier wick filters air filter factory authentic air filter factory brand product upc 842477118785.this non-oem replacement wick filter is made in the usa and designed, as well as distributed solely by air filter factory. this is not a oem product and is not covered under any manufacturer's warranty. the brand name and logos are the registered trademarks of their respective owners. any use of the brand name or model designation for this product is made solely for purposes of demonstrating compatibility.