Best Vacuum Filter Compatible with Shark NV350 HEPA Filter, Fits NV350, NV351, NV352, NV355, NV356, NV357, NV360, NV370, NV391, NVLFT199, UV440, UV540 Vacuums, Part # Shark XHF350 Designed to fit Shark NV350 HEPA Post Filter Filter Fits NV350 NV350A NV350E NV350Q NV350T NV350W NV350WC NV350WM NV351 NV352 NV355 NV356 NV357 NV360 NV370 NV391 NVLFT199 UV440 UV540 Vacuums Compare to Part # XHF350 Designed & Engineered by Best Vacuum Filter