Like the others, no vac chamber. I don’t see a need unless you’re going through lots of plastic and selling. Maybe not even then. I remember when Baitjunkys sold Calhoun’s, he vacuumed his plastic just to make sure his customers got a good useable product as best he could supply. He was going through lots of plastic….so what’s in the Bait Plastics kit? We need to know that before we can really answer your Q.