Hotronix® Auto Open Clam Heat Press


Hotronix SKU: hotronixAOC1620

16 x 20
16 x 16
11 x 15

Auto Open Clam Heat Press

  • Three sizes available 16″ x 20″, 16″ x 16″, 11″ x 15″
  • Patented magnetic auto-open feature prevents over-application.
  • Easy-to read digital time, temperature, and pressure display for consistent printing.
  • Locks down easily with patented magnetic assist, causing less fatigue on wrists and shoulders
  • Twin Timer™ allows user to pre-set individual time settings for two-step application or for pre-heating and application
  • Wide opening for easy layout
  • Space-saving clamshell design
  • Over-the-Center Pressure Adjustment for even, edge-to-edge heat and pressure regardless of the substrate thickness


The Heat Press Caddie™ Stand


  • Heavy-duty, self-leveling casters make your clam press portable
  • Adjustable pedestal stand can be raised or lowered for individual operator comfort
  • Shipping dimensions and weight: 33″ x 33″ x 12″ 59 lbs.
  • Easy to assemble
  • One year warranty
  • Blue Ribbon Support 24/7/365

    Download the Caddie Stand installation instructions.

    Learn how to make your Hover heat press even more efficient with the Heat Press Caddie™

    Download Manual (PDF)

    Download a comprehensive (PDF)


    16x20 16x16 11x15

    5 Amps / 1800 Watts

    35'L x 25W x 25'H

    90lbs Ship Weight


    15 Amps / 1800 Watts

    35'L x 25W x 25'H

    90lbs Ship Weight

    8 Amps / 1000 Watts

    31'L x 21'W x 21'H

    72lbs Ship Weight


    Universal Features
    Made in the USA
    Cast-in tubular heating
    Powder coated finish
    Actual weight: 62-90 lbs.
    Ship weight: 72-100 lbs.
    Ship dim. 36″ x 25″ x 21″;
    Optional Platens
    7″ round
    6″ x 10″
    8″ x 10″
    11″ x 15″
    Heating Element – Lifetime ;
    Framework – 5 years ;
    Circuit Board – 2 years ;
    Parts & Labor – 1 year;



    Questions & Answers

    Everyone has questions. Tell us yours.

    Q: Sometimes when I lock down my Auto Clam it releases too soon. Any suggestions?

    A: If you can't get your heat press to stay closed, there may be too much pressure or the round magnet on the adjustment arm may need cleaning. Check with your manufacturer.

    Q:After being on and not used for several hours, my Auto Clam shuts off. Is this a feature that can be changed?
    A:The Auto Clam has a manual safety feature with an automatic shut off if the machine is idle for two or more hours. This feature cannot be disabled. Refer to your owner's manual for information on how to reset.
    Q:How can I check the pressure setting on my heat press?
    A:Lower the upper platen and lock it into place. Heat presses with a pressure readout will display the setting on the front panel.
    Q:The handle on my Auto Clam heat press only releases one or two inches, then stops and is very hard to lift. How can I get it to work normally?
    A:The gas springs may be loose. A replacement can be ordered from Hotronix®.
    Q:What voltage are the Hotronix® heat presses sold in?
    A:Hotronix Heat Presses are available in both 110V or 220V.