Hoover Elite Rewind Bagless Uprights HEPA Exhaust Filter F261. 

1 HEPA Filter in Pack. 

A Must for Allergy Sufferers. 

Fits Models: U5507900, U5507950, U5509900, U5509950, U5511900, U5512900, UH40070, and UH40150HD. Manufacturer Part No.: F261

HR-18261

SC-38-2316-01