I have 2 of the vp112 units both units run 7-10 hrs per day from sept to feb (Deer season in NJ) I also use the vac port for canisters and ball mason jars. the units WORK.enough said. only wish is to be able to go more then 9 sec seal time do not think they will seal 4mil bags.
The VP112 will seal 4MIL bags. I have some customers who use the machine on our 4.8 MIL bags, too. The only thing the VP 112 won't seal is a retort pouch.