Nispira Carbon Pre Filter A 18150 For Honeywell Air Purifier HPA5300 Series, HRF-AP1, HPA300, HPA100, HPA250, HPA030, HPA200, HPA020 Round, QuietCare, SilentComfort Item Package Quantity:2 Compatible with original Proton Pure

Compatible with original Proton Pure air filter

One filter can last from 6 months to a year based on normal use

EMO4000JBB04

We’ve tried brews doing 2 drips per second

Nispira Carbon Pre Filter A 18150 For Honeywell Air Purifier HPA5300 Series, HRF-AP1, HPA300, HPA100, HPA250, HPA030, HPA200, HPA020 Round, QuietCare, SilentComfort Item Package Quantity:2 Compatible with original Proton PurePremium aftermarket universal activated carbon pre filter compatible with Filter A HRF AP1 It fits Honeywell model: HPA5300 InSight Series, HPA020 series, HPA030 series, HA090 series, HPA090 series, HA100 series, HPA100 series, HPA200 series, HPA250 series, HA300 series, HPA300 series, HPA3100 series, HPA5100 HPA5300 series, 10500 series, 10590 series, 11150 series, 12500 series, 13300 series, 13503, 13520 series, 13530 series, 14500 series, 17000