I bought this to replace a contractor grade fan cover (Braun 688) that was 17 years old.The fit was perfect. From the box to replacement it was at most 10 minutes. Dont forget to pull the plastic film off which is covering the light and speaker. The light works great. I like having the one wall switch for LED light and fan.The speaker is not hi-fi quality but you can hear it over the fan which I also replaced at the same time as the cover.