SHARK (2 Sets) Type XFF350 Filter Kits (2 Foam & 2 Felt) for Shark Navigator Lift-Away NV350 series, UV440 Vacuum Models. Genuine Gold Line filters. Compare to Shark XFF350 and XFF350NZ filters Washable and Reusable filters designed to fit Shark Navigator Lift-Away vacuum series NV350, NV351, NV352, NV355, NV356, NV356E, NV357, and Deluxe UV440 Engineered with care and expertise to exceed OEM standards Gold Line products are backed by our Money Back Guarantee on quality and fit Designed and Produced by Gold Line- Look for the Gold Line label to ensure authenticity!