I just saw this on an online retailer site and thought I'd post it in a new thread as I've been trying to unsuccessfully find out this key bit of info for almost two years now since it's never been mentioned in any of Sylvania's literature.
So if anyone ever does a search for 'grolux' and 'kelvin' in future (like I did), now they'll know instantly!
So if anyone ever does a search for 'grolux' and 'kelvin' in future (like I did), now they'll know instantly!