It varies from company to company...they'll tell you 7 to 10 years, but
I tried to do it at least every 5 if not every 4. Thanks to our
colleagues in the conservation ranks, it was determined that they really
didn't last as long as the manufacturers might have us think.  Any
conservators out there?  Any other thoughts?

VivianLea Stevens

Mike Highfield wrote:
>
> Well there ya go!  I didn't realize that the UV sleeves needed to be
> changed.  How often??
>
> Mike
>
> ...on the one hand Mike, your comments are true, but people are VERY
> slack about changing the sleeves.  It would be better if the case could
> be lit from outside the case.  Remember, light is energy and the greater
> distance it has to travel, the more it will dissipate, therefore causing
> less damage.
>
> VivianLea Stevens