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GTI Light Output
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GTI Light Output


  • Subject: GTI Light Output
  • From: Ken Fleisher <email@hidden>
  • Date: Fri, 4 Feb 2011 15:06:48 -0500

I have a question about the GTI GLL 432e 4-lamp 48" overhead luminaires
(proof light). I cannot find information about how much light they output. I
need to decide on which model to buy (4- or 8-lamp model) and how far from
the proofing surface it needs to be hung, but I need to know how much light
output there is to determine this. Does anyone know 1) where I can find this
information or 2) how much light I can expect from these fixtures?

Of course, I am trying to conform to ISO 3664 viewing conditions, so my goal
is 2000 lx ±500 lx at the viewing surface.

I need to decide soon so I can tell the architect how large the fixture will
be and where it needs to be placed. Any help that can be provided will be
appreciated.

Thank you.
Ken Fleisher
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