Good. . . I weigh 312 pounds and sit in a 275 pound chair for too long. A great chair with a maximum weight that probably relies on the gas tank more than anything else. (I used to have a 350 lb chair when I weighed 275 and its gas tank was worn out too.) Keep in mind that this particular gas tank is a little taller than my other tall. (It goes up really, really high, like a bar stool.) I like this because I've always had to get my stool about an inch higher, and now it never wears out since I'm on the lowest level, so it can't Go deeper with excess weight. (If you can't get the gas cylinder out, which I couldn't, find "Replacement Office Chair Tilt Control - S2979", a removable panel on the bottom of the chair and replace both.)
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