Doesn ' t make a sound . Fits exactly like the standard floorboard and I finished off the underside and edges with car carpeting after I took these pics . Didn ' t rattle without the carpet either , it weighs about 30 pounds . And is a pretty snug fit . Only going in for shows for that reason . <| sep |> I have my own take on this . I like to say that research alone is not science , exactly like a single brick is not a house . we may not like it , but science is slow . relentless and cumulative , but slow . and it gets slower the more distance there is from logic deduction . science is faster on physics and chemistry , but slower in , say , food science and nutrition . oh and yes , as a general rule , fitnessrelated discussions tend to be a fucking nightmare ahah . just try and mention that the leg press is a fair subsitute of squats .