The Model 450 has several features to accommodate less-than-perfect cases, according to the company, including opening arms that \"over-open\" the major flaps to compensate for incorrectly slotted cases; vacuum cups that grip each case from above and below to compensate for warped cases; and a walking beam case drive that automatically squares cases as they are transferred through the erector. The large-capacity case magazine is self-indexing to maximize time between refills, and case magazine extensions provide additional capacity.
