A Clamshell Heat Press is so named after the method that the press opens to accept the substrate - the top platen rises straight up much like a clam opens its shell. These products typically open quite wide for safe placement or removal of your product. The work best when side-to-side space is limited and would prevent the use of a swingaway press. Many feature digital temp and timing control as well as easy pressure adjustments. These are the perfect presses for shops where free space is limited.