The Reber Vacuum System are External suction machines ( this kind of machines have a small vacuum chamber, where the open side of the bag must be placed, and most part of the bag is outside the machine) to be used with embossed bags, the thickness is usually not important except for the matter of being strong enough, you only have to consider the size of the welding bar, but you can use bags as long as you need; These machines are without any problems because machines are simple to use without any limit of size of the bag (except the welding bar 32 cm), usually with no need of maintenance.