iSpring F3 6-Month Replacement Prefilter Set for Standard Under Sink & Reverse Osmosis Systems

Maintain the performance of your reverse osmosis or under-sink water filtration system with the genuine iSpring F3 Replacement Prefilter Set. Designed for standard RO and under-sink filtration systems, this 3-stage prefilter kit helps protect your RO membrane while delivering cleaner, better-tasting drinking water.

The filter set includes a sediment filter, granular activated carbon (GAC) filter, and CTO carbon block filter to help reduce sediment, rust, dirt, chlorine taste and odor, and other common contaminants before they reach the RO membrane. Regular filter replacement helps extend membrane life and maintain optimal system performance.

For best results, replace the prefilters every six months or as recommended based on your water quality and usage.

Compatible Systems

Compatible with:

• Standard 5-stage Reverse Osmosis Systems
• Standard 6-stage Reverse Osmosis Systems
• Most Standard Under Sink Water Filtration Systems using 10-inch x 2.5-inch filters
• Select iSpring Reverse Osmosis Systems

Please verify your system specifications before purchasing.

Key Features

• Genuine iSpring replacement prefilter set
• Model: F3
• Complete 3-stage replacement kit
• Includes:
  • 5-Micron Sediment Filter
  • Granular Activated Carbon (GAC) Filter
  • CTO Carbon Block Filter
• Helps reduce:
  • Sediment
  • Rust
  • Dirt
  • Sand
  • Chlorine taste and odor
  • Common water impurities
• Protects the RO membrane
• Improves drinking water taste
• Easy installation
• Replace every 6 months

Specifications

Brand: iSpring

Model: F3

Filter Type: Reverse Osmosis & Under Sink Prefilter Set

Filtration Stages: 3

Filter Size: Standard 10" x 2.5"

Includes:

• Sediment Filter
• GAC Carbon Filter
• CTO Carbon Block Filter

Compatible With: Standard Under Sink & Reverse Osmosis Systems

Recommended Replacement: Every 6 Months

Benefits

• Helps extend RO membrane life
• Improves water taste and odor
• Removes sediment and chlorine before membrane filtration
• Maintains optimal water flow
• Easy DIY replacement
• Genuine iSpring filtration quality