How many?

Calculating the number of brushes you require

Numbers will depend upon the design you choose.
See layouts for details and then look at quantity charts.

Rectangular chambers

4 inch (10cm) – VIEW

6 inch (15cm) – VIEW

8 inch (20cm) – VIEW

Circular chambers

4 inch (10cm) –  VIEW

6 inch (15cm) –  VIEW

8 inch (20cm) –  VIEW

In circular chambers, brushes should be arranged so that there are as few gaps as possible round the edges. Alternatively you could use Black Knight vortex brushes