Filter adapter for balls - Lay-Z-Spa or Pure-Spa

I made a slight change to the dimensions of the model so that it fits better into the original filter holder in the whirlpool bath. It is now firmly secured in the holder.

It is no longer necessary to use silicone to secure the adapter to the holder – the filter holder now does this. (However, it is still possible to add a silicone seal to the adapter.)