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“Compatible” describes whether it works. “Required” or “Useful” describes whether you should buy it.
Shark · Part XFF350
Shark lists the XFF350 foam-and-felt pre-motor filter kit as compatible with NV360.
Safety qualification: exact tier-1/2 manufacturer or certification evidence is linked, with no active conflicting evidence.
Shark · Part XHF350
Shark lists the XHF350 post-motor HEPA filter as compatible with NV360.
Safety qualification: exact tier-1/2 manufacturer or certification evidence is linked, with no active conflicting evidence.
Open the evidence, limitations, and model identity for a single accessory.