Hoover Qty. 1 2 3 4 5 6 7 8 9 10 Add to Cart Genuine Hoover Twist N Vac Filter - is currently on backorder. You may still purchase now though and we'll ship as soon as more become available. FitsTwist & Vacs, RoadRats and SideWinder Hand vacs including thesepopular models S1147050 and S1156###.