I think increasing the size of the steel ring will give better access to inside the bag for cleaning. Would be good to make them mid size not long.

I believe the longer the sock bag is the less accurate it filters because the more volume of oil it contains the more likely to stretch the material of the bag due the heavy weight of the oil .

I think bigger size filter bags should only be made in 20+ micron. But shopping bags can do the trick.

Regards

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Fitian
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