For some reason, Tefal produces carbon filter replacements for its fryers in a thickness that is less than half the thickness of the original filter that comes with the new fryer. They are easily lifted and transparent when held up to the light. Naturally, their durability and absorbency are also limited. Unacceptable quality, it is better for someone to buy a bulk carbon filter and cut it to the shape that the fryer takes, rather than waste money on the company's "official" ones.