xclusive--the chipper cap has four vents, two on each side in the front of the cap. We installed two back vents with mesh tarp, and we installed a mesh "skirt" just behind the door. It won't fill completely full, but it is very close. The nice thing is there is very limited dust and blowout. We haven't had a suction issue, but might if the loader had more CFM. Still a work in progress, but much better than just a tarp top.