Dolphin M400 - set of 4 fine mesh filters. flake Replaces - Unicel 4CH-21

Replaces - Unicel 4CH-21

forming a single piece strainer pot and volute (the 'wet end') for extra strength

Bottom - 46mm SAE thread

An additional unique secondary seal protects the motor end-shield from any fluid contact

stirred to dissolve and then added at the inlets and some into a skimmer to disinfect the filter bed

Dolphin M400 - set of 4 fine mesh filters. flake Replaces - Unicel 4CH-21Dolphin SPDSF03 'Spring' or fine mesh filters. These are intended for early season cleaning of the pool, when outdoor pools have larger items of debris such as leaves. After removing leaves etc you would replace these with the pleated version for regular use, once the pool is clean. We offer a set of four for 54 inc VAT Plus shipping @ 12.