360 Dual Ultra Filter 4.5x20
SKU 360-DUAL-4520-20-5
System features
Dual-stage filtration
Two 4.5 by 20 inch cartridges in series treat every drop of water entering the home.
Choose your cartridge pair
Pick graded sediment stages for grit and silt, or sediment plus carbon for chlorine, taste, and odor.
High-flow performance
Large-format housings hold strong pressure up to 20 GPM, even with several fixtures running.
No power or backwash
No drain line, no programming, and no moving parts, just low-maintenance filtration.
Twist-off housings
Quick, tool-free cartridge changes designed for simple homeowner maintenance.
Whole-home coverage
Installed at the point of entry, so filtered water reaches every tap, shower, and appliance.
Overview
About this system
Two stages of whole-home cartridge filtration in one compact, heavy-duty system. The 360 Dual 4.5" x 20" Ultra Filter System treats every drop entering your home through oversized, high-capacity cartridges.
Two Stages, Chosen for Your Water
Stage 1. Sediment Filtration
Captures sand, silt, rust, and dirt that cloud water and settle in plumbing, protecting fixtures, valves, and anything installed downstream.
Stage 2. Your Choice of Media
Finish with a finer sediment stage for silt and fine particles, or with carbon to reduce chlorine, chloramine, and the tastes and odors they carry. You select the pairing when you order.
Cartridge Pairings
- 20/5 Micron Pleated. Graded sediment, coarse then fine, for water carrying visible grit or rust.
- 5/1 Micron Pleated. A finer graded pair for silt and fine particles where clarity matters most.
- 5 Micron Pleated and Carbon Block. Sediment first, then carbon block for chlorine, taste, and odor reduction.
- 5 Micron Pleated and Radial Flow Carbon. Sediment first, then radial flow carbon for chlorine reduction with less restriction at higher flow.
Engineering Specifications
| Specification | Detail |
|---|---|
| Model | 360 Dual Ultra Filter 4.5" x 20" |
| Stages | Two, in a dual housing |
| Flow Rate | Up to 20 GPM |
| Cartridge Size | 4.5" x 20" |
| Sealing | Double O-ring |
| Mounting | Wall bracket |
| Power and Drain | None required |
| SKUs | 360-DUAL-4520-20-5, 360-DUAL-4520-5-1, 360-DUAL-4520-CB, 360-DUAL-4520-RC |
Installation
Point of entry installation filters all water entering the home. Installed by our local team, quoted after your water analysis.
10-Year Limited Warranty
The housings are covered by a 10-year limited warranty from the date of purchase against defects in material and workmanship under normal residential use, administered directly by 360 Water Systems.
Full terms, exclusions, and claims process available on request. Warranty covers parts only and does not cover labor, shipping, or damage from improper installation, incoming water quality, freezing, or operation outside rated pressure or temperature limits.
Support That Answers
Sizing, installation, and long-term service are handled by 360 Water Systems. Reach a real person by phone, text, or chat for help choosing the right cartridge pairing for your water.
How This Compares
Two stages of cartridge filtration in one footprint. For a single stage, see the 360 Ultra Filter 4.5" x 20". To add salt-free anti-scale as a third stage, see the 360 Triple Ultra Filter 4.5" x 20".
Complete your install
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