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Made in the UK

Doby Fluoride Filter

A single Doby whole house filter to remove fluoride from your mains water.



Product SKU: PRAA343



Fluoride and Taste, Odour, Chemicals, and Sediment whole house filtration with this double Doby setup - removes fluoride and improves taste and odour while also removing chemicals and sediment from your mains water supply.

When fitting allow for a minimum of H 72cm x W 30cm x D 18cm.

Your kit will include:

  • 1 x 20 inch big blue filter housing
  • 1 x white housing bracket
  • 1 x Activated Alumina cartridge for fluoride reduction
  • Either 1/2 for 15mm or 3/4 for 22mm ports
  • 2 x Isolating flexis (no need for extra ball valves)
  • 1 x double check valve - either 15mm or 22mm
  • 1 x housing spanner
  • Fitting instructions for your plumber

Cartridge details:

  • 1 x 4.5'' x 20" activated alumina fluoride removal filter cartridge
  • 20 micron
  • Temperature range 40°F (4°C) to 100°F (38°C)
  • Pressure range 25 psi (1.7 bar) to 100 psi (6.9 bar)
  • Capacity 10,000 mg/l
  • Flow rate - 15 lpm / 3 gpm
  • Reduction ability - 10ppm to <0.2ppm (93% reduction)

Do you have to install a mains water filter under the sink?

No, you don't. You can install your mains water filter wherever the cold water supply enters your house. This could be a utility room, garage, or other location.


* Watts components are sometimes replaced with other similar quality items due to supply chain issues. Brassware and other plumbing accessories are sourced from UK suppliers.

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