3M AP2-C405-SG Mini Filter including AP2 Head

We supply the 3M AP2-C405-SG Mini Filter as a compact, high-performance inline water filtration solution for home or light commercial use.

It is supplied with an AP2 filter head and built-in ¼" push-fit connections, meaning it’s ready to install straight out of the box.

The 0.5-micron filter delivers reliable water purification in tight spaces, with a total capacity of 4,000 litres. It effectively reduces chlorine, lead, sediment, limescale and harmful contaminants, including protozoan cysts such as Cryptosporidium and Giardia.

The integrated scale inhibitor also helps prevent bacterial growth and prolong the lifespan of your water-fed equipment.

All 3M filter systems are NSF-certified to meet or exceed Standards 42 and 53. Order now and benefit from fast UK delivery and expert support from the Finerfilters team.

Effective Water Filtration in a Compact Format

The AP2-C405-SG system incorporates compact dimensions with outstanding filtration capability. At just 24cm in height, this filter unit fits easily under most sinks or within tight utility spaces, making it a practical solution for homes or businesses with limited room.

The included AP2 head features integrated mounting and push-fit ports, which make installation a complete breeze. The rated flow rate of 1.9 litres per minute and working pressure range from 25 to 120 PSI, means this system performs consistently across a wide range of domestic water supplies.

As a direct replacement for older 3M and Aqua-Pure models, this model allows for easy upgrade or swap-out whilst being fully compatible.

Customers frequently use it with water chillers, beverage dispensers, and general under-sink installations.

Why Order from Finerfilters?

We’re a leading UK-based supplier of certified filtration products and accessories, trusted by thousands of domestic users, aquarium owners, and commercial customers.

With specialist knowledge, competitive pricing, and fast UK-wide dispatch, Finerfilters offers a reliable source for genuine 3M water filter solutions.

Every filter is tried and tested meaning it meets strict global safety standards for taste, odour, and contaminant reduction.

Need Help Choosing a Filter System?

Our UK-based customer support team is here to help. If you’re replacing an older model, upgrading your system, or installing one for the first time, we’re happy to provide advice on fittings, flow rates, and filter compatibility. Contact us today.