Vermar air exchanger for my air needs

I use a venmar house air exchanger for my needs.Two 8" one intake and one exhaust and two 6" outside air intake and air exhaust. It can be setup many different ways .It can recirculate for winter type use or normal which would intake outside air.You can use the one outside air intake for another grow room. It has a Heppa filter that helps out with air quality and smell. Works for me and when I'm not growing I connect it to my house. I know the cost is somewhat high and it won't work for small apartment grows but it has a place for some.Mine came with a kit with all the hose and connections.Have a good day.