20x4.5 Carbon block Water Filter — 5 Micron
A 5-micron carbon block (cto) cartridge for any standard 20x4.5 housing. Removes chlorine taste & odour, VOCs, and many organic chemicals. Polishing stage — improves taste and reduces chemicals; the tight micron also catches fine sediment.
Other micron ratings (Carbon block)
Same size and type, different fineness — all fit your 20x4.5 housing.
Other filter types this size
FAQ
What does a 5 micron carbon block filter remove?
This 5-micron carbon block (cto) removes chlorine taste & odour, VOCs, and many organic chemicals. Polishing stage — improves taste and reduces chemicals; the tight micron also catches fine sediment.
Will a 20x4.5 cartridge fit my housing?
Yes if your housing is the standard 20x4.5 size (20" Big Blue). Cartridges are universal by size — any 20x4.5 cartridge fits any 20x4.5 housing regardless of brand. Match the length, diameter and micron.
How often should I change it?
Change every 3–6 months. Hard or dirty water shortens that; a pressure drop or returning taste/odour is your cue to swap sooner.
Which micron rating should I choose?
Lower micron = finer filtration but faster clogging. For carbon block, 5 micron balances taste and flow; 0.5 micron for the finest chemical/particle reduction.