4506 Carbon Post Filters 6 pack (4000)
How often do I need to change my post carbon filters?
Model 4000 - Average once every 6 to 8 weeks
This is the newer cartridge style filter if you have the older "Teabag" style you would need to order our Ecowater filters

Replacement Filters for the Waterwise 4000
4506
$26.00