HQRP Pre-filter for Hoover Windtunnel T-Series UH70240 / UH70241 Rewind Plus Bagless Upright Coaster HQRP&reg; Washable filter + HQRP&reg; Coaster; Pre-filter for Hoover Windtunnel T-Series Bagless Upright; This filter is for Hoover Part # 303173001 / 303173002; 100% Compatible with Original filter; 2 weeks DOA replacement warranty!