Check the listing for details. (4-Pack) COMPATIBLE WITH HOLMES HAP726-U HAP9726-U CHARCOAL CARBON FILTERS. Color: Black, Condition: New. Listed at 10.97 USD. AIR FILTER FACTORY BRANDCOMPATIBLE With *HOLMES HAP726-U HAP9726-UAIR PURIFIER CHARCOAL CARBON PRE-FILTERS 6" x 9-1/4" x 1/4" (4-Pack) Provided you live in the continental United States, expect you order to arrive at your door in 4 to 7 business days. Rush orders available. For stock filters, there is a 20% return restock fee less shipping. *This NON-OEM replacement carbon filter set is designed as well as distributed solely by Air Filter Factory. This filter set is meant to help capture smoke, dust, and odors. This is not a Holmes OEM product and is not covered under any Holmes manufacturer's warranty. The Holmes brand name and logos are the registered trademarks of their respective owner. Any use of the Holmes brand name or model designation for this product is made solely for purposes of demonstrating compatibility.