Outstanding Performance:
The string wound filter has a deep graded honeycomb structure, dense near the inside core and more open and sparse near the outside edge, forming an effective depth filtration filter, catching larger particulates first and then smaller near the center core, effectively increasing the dirt holding capacity of the filter.

Significant Difference between String Wound Filter with Melt-Blown Filter:
*Flow Rate*: String Wound Filter > Melt-Blown Filter
*Dirty-holding Capacity*: String Wound Filter > Melt-Blown Filter
*Service Life*: String Wound Filter > Melt-Blown Filter

Standard Size:
20" x 4.5" universal string wound filter cartridge fits most 20 inch big blue filter housings, as prefilter of reverse osmosis (RO) systems and whole house water filtration, as well as variety of commercial and industrial water treatment systems.

Functions:
Remove 99% particles, silt, sand, rust and other undissolved particles in dirty water. As the first line of defense in the filtration system, protect your water using appliances and plumbing for cleaner water, improve water quality and taste.

Safety Material:
Food grade 100% Polypropylene material, lead and BPA-free. Non-toxic, odorless, no leaching or secondary pollution. Providing a healthy, safe water-filtering experience.

Certification:
Food-grade material, meets NSF42 and CFR21 certification.

Lifetime:
For better water quality, recommended replace 2 or 3 times every year, depending on the quality of the original water source and application type.

Compatible Housings, Filter Systems and Parts:
Most brands' 20" x 4.5" housings (Outer diameter 7.3″ at the top and 23.5″ of height approx.)
Ace Hardware 4021341
American Plumber 155184-51, W5CPHD
Aquaboon AB-1PL20BB1M, AB-1PL20BB5M, AB-1SL20BB1M, AB-1SL20BB5M, AB-1SW20BB1M, AB-1SW20BB5M
AquaPure AP800, AP810-2, AP802B, AP802T
Culligan 155184, CP5-BB, CP5-BBS, CP5-BBSa
Cuno CFS210-2
Dupont HDC3001
Express Water WH300SCGS, WH300SCKS, WH300SCPS, FLTWH2045C, FLTWH2045G, FLTWH2045S
Everpure EV910837
Filter Specialist CMMF0520-45W1
Flowmax FM-BB-20-1
FreshWaterSystems MBGC-45200-05, PS-45097-05, PS-45200-01, PS-45200-05
GeekPure 20-inch filter housing, PP20-BB-5, 
Harmsco HB-20-1W, HB-20-5W, WB-HB-20-1W, WB-HB-20-5W
Hydronix SDC-45-2005, SDG-45-2005, SWC-45-2005, SWC-45-2020, HF45 series
iSpring F3WGB32B, F3WGB32BM, F3WGB32BPB, F3WGB32BKS, F6WGB32B, FC25B, FP220B, FP25B, WGB12B, WGB22B, WGB32B, WGB32B-KS, WGB32B-PB, WGB32BM
Keystone GPC5
Liquatec SPF-45-1005, SPF-45-2005
Membrane Solutions MPP-F20B, PE-F20B
Neo-Pure MBGC-45200-05,  PS-45097-05, PS-45200-01, PS-45200-05
OmniFilter RS15, RS-15
Pelican PBBB-P20-5, PBB-P20-1, PBB-P20-5
Pentair Pentek DGD-5005-20, ECP20-20BB, EP-20BB, NCP-20BB, R30-20BB, SDC-45-2005, WP5BB20P
Pura 33003117
Pureplus PP20BB, PPL20BB
Purwater PC05-BB-S
ShurFlo 15-054-02
SimPure DB20, DB20P, MPP-F20B-5
SpiroPure SP-DD-5005-20BB, SPC-45-2020
Sterilight CMB-520-HF
Tier1 DGD1-20BB, ECP50-20BB, R30-20BB
Valuetrex VX05-20BB
Watts FM-BB-20-5, FPMB-BB5-20, PWPL20BBM5, WPC1FF20
*The list is under continuous updating. Please contact us via eBay message if you don't find your system model here.

Disclaimer:
*This product is a generic item that is designed to replace the original part.
*Any brand names or logos are the registered trademarks of their respective owners.
*Any use of any brand name or model designation for this product is made solely for purposes of demonstrating compatibility.

Package Includes:
20 x Water Filter