Insta 828 Automatic Swing-Away Heat Press 20" x 25"Insta 828 Automatic Swing Away Heat Press Sublimation & Beyond Instas Model 828 Automatic Swing Away heat press machine is, with its 20 x 25 platens, our largest machine. The 828 is frequently used in the sublimation market because of its oversized platens and its ability to generate even temperature & pressure which are essential in the application of sublimation transfers. It is also used globally, by contractors for many of the worlds top apparel