Fuel Filter Other Than The Gascolator

Hi Experts,

I know this has been written about before, but I'm hoping for some specific recommendations.

My build (Sling 4) has a quality gascolator on the engine side (122 micron filter) and has included some plastic filters for the cabin side, but they don't have any barbs on them (see pic), so it doesn't seem too secure to me.

The Rotax manual recommends a "fine filter" size of 100 microns, so it doesn't seem prudent to go smaller than that and I've seen on this board not to use paper filters.  So, any specific in-line filter recommendations that meet the Rotax recommendation?

Thanks!,

Craig