These bulbs fit perfectly in my Samsung ME18H704SFS microwave oven. The pens are the same size. The bulb itself is smaller, although that doesn't matter. I just put them in and found them to be very hot to the touch even with the cap on. I didn't even pay attention to whether the native lightbulbs were on or not. Think I'll update later. I will try them. Addendum: still works perfectly.
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