Shark Navigator Lift-Away Pro Fits: NV355, NV356 and NV357 Series. Compare to Part # 156FFJ. Designed and Engineered by Crucial Vacuum.This is a generic product designed and engineered in the United States by Crucial Vacuum. This is not a Shark® OEM product and is not covered under any Shark® manufacturer"s warranty. The Shark® brand names and logos are the registered trademarks of their respective owners. Any use of the Shark® brand name or model designation for this product is made solely for purposes of demonstrating compatibility.