Original OEM factory True H13 class HEPA filter (Neutralizer) for the single speed E-2 (e SERIES™) Rainbow unit. If you have to remove four screws to replace your filter, this is the WRONG PART!
Effective serial number 9280000 with a start date of March 27th 2000 through serial number 9999999 and an end date of September 3rd 2003.
The bulk item number for this is R12106B. Some websites list this part number for a single item which is incorrect.