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These are for the Presto popper only. They get hot by absorbing the microwaves.
Sorry, there was a problem. Please try again later.Our Concentrator Cup contains a specialized film, which works by absorbing microwave radiation (waves from your home microwave oven) and converting it to heat, which now serve to pop the corn kernel evenly. If we can assist you further, please feel free to contact us directly at 1-800-877-0441 Monday - Friday, 8:00 am - 4:00 pm Central Time. You're welcome to email us as well. Our email address is [email protected] and we are always happy to help.
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