HQRP Air Purifier Filter for Hamilton Beach part 990051000 Replacement fits Hamilton Beach 04383 True Air Purifier + HQRP Coaster HQRP&reg; Replacement Air Purifier Filter plus HQRP&reg; Coaster; Replaces Hamilton Beach part 990051000; Easy to install; NOTE: This filter is not washable; Replace every 12 months; Dimensions approximately: 11.7" x 5" x 1.1"; Essential For Allergy Sufferers; Compatible with Original filter; 2 weeks DOA replacement warranty!