HF20BB-TWIN Housing Set 20in Large Diameter with Spanner

The HF20BB-TWIN is a matched pair of 20 inch large diameter filter housings, supplied ready assembled and complete with the correct spanner. WrekinWater puts this set together for anyone setting up two-stage filtration who wants everything needed to get started in one order, rather than sourcing housings and a compatible spanner separately. It's built around the same HF20BB housing used across our large diameter range.

Why you might need this

• You're setting up two-stage filtration and want housings supplied as a matched, ready-assembled pair.
• You'd rather the correct spanner was included from day one than sourced separately.
• You're upgrading from a single housing to twin large diameter housings for higher flow.
• You're replacing an ageing twin housing setup with a new ready-assembled unit.

Buying housings and a spanner as separate items risks ending up with a tool that doesn't quite fit, or forgetting one altogether until the first filter change. This set takes that uncertainty out of the equation: two HF20BB housings arrive already paired up, along with a spanner sized to fit them, so there's nothing extra to track down before you can plumb the set in and start using it.

WrekinWater is a family run company based in Bettisfield, Shropshire, that has served more than 50,000 customers over 15 years and is rated "Excellent" on Trustpilot. This twin set uses our own HF20BB housing, so you're getting a set we know and support directly, not a bundle of mismatched parts.

How to fit it

1. Choose a wall-mounted position with room for both housings and clearance for cartridge changes.
2. Secure the assembled twin set to the wall using suitable fixings.
3. Connect the inlet and outlet pipework to the correct ports for two-stage filtration.
4. Fit your chosen filter cartridges into each housing before use.
5. Use the supplied spanner to hand-tighten each housing securely.
6. Turn the water supply on gradually and check both housings for leaks.