Product Overview

The EWS F.SET.RO4 and F.SET.RO4-UV replacement filter sets are designed for compatible EWS RO4 and RO4-UV under sink reverse osmosis systems.

Key Features:

• Replacement filter sets for compatible RO4 and RO4-UV systems
• F.SET.RO4 includes inline sediment, advanced carbon, RO membrane, and carbon block filters
• F.SET.RO4-UV includes the RO4 set plus UV lamp
• Designed for annual replacement
• Helps maintain reverse osmosis system performance

Common Uses:

• Annual maintenance for EWS RO4 reverse osmosis systems
• Replacing used filters and membrane after normal service life
• Maintaining under sink drinking water RO performance

Important Compatibility Note:

Select the correct variant for the installed RO4 or RO4-UV system. Filter, membrane, and lamp life may vary depending on water quality and usage.

FAQ

Which set should I choose?

Choose F.SET.RO4 for standard RO4 systems or F.SET.RO4-UV for RO4 systems with UV protection.

Does the UV version include the lamp?

Yes. The F.SET.RO4-UV option includes the RO4 filter set plus the UV lamp.

What should I check before ordering?

Confirm your installed system model and whether it includes UV protection.

Why Buy From Big Frog Supply?

Big Frog Supply provides clear product details, helpful support, and fast online ordering.