Thanks for asking.
I use a pleated filter as it works better than the real cheap ones and I can use my shop vac to clean it off periodically (weekly).
I didn't have a box fan I had the round fan on hand so I built a box around it to hold the filter. Some folks use a 20" box fan. You want the fan/filter to sit so the fan is blowing away from the saw. it really helps draw the fine sawdust out of the air into the filter.
I also made a small thing to store some blades that are close by while working on a project. This is attached to the top and I have a packet of small files hanging on the side below the blades.
The saw looks built in but it is actually surface mounted on top of the bench and it's raised 3 1/2 inches in the rear with the front sitting proud of the bench which makes it appear like it is built in in that photo. I think you may be able to see it better in this pic. This one is prior to painting.
What else would you care to know?