What does the X marking on performance categories mean for the oven glove?
The X markings denote that those tests were not conducted, so no claims can be made about protective properties in terms of limited flame spread, convective heat, radiant heat, small splashes of molten metal or large quantities of molten metal. (Page 2)
From the official Ikea 104 796 04 Mariatheres Oven Glove manual, page 2
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