HQRP 5-Pack Foam & Felt Filter Kit for Shark Rocket Deluxe UV450 UV450CCO UV450CCOFS Ultra-Light Upright Vacuum Coaster HQRP&reg; 5-pack Foam & Felt Filter Kit plus HQRP&reg; Coaster; Washable and Reusable; Absolutely Essential for Allergy Sufferers; Change your filters every 3 to 6 months for optimal performance of your vacuum; Compatible with Original filter; 2 weeks DOA replacement warranty!