Messages

Subject:
I have two types

Ian Neuhaus
One is a regular 4' long open bottom fluoro style tray fitted with 2 x T8 tubes. The box states:
3000 lumens, 18 W
colour temperature 4000 K = cool white

The other is a 4' long semi sealed unit with a lens. It's not clear if the light contains one or two tubes. The box states:
4000 lumens, 75 lumens per watt, 53 W (total)
Colour temp 4000 K = cool white
beam width 120 degrees -- this light seems to be more directional than the other one. side by side, the 4000 lumen light is the "better" one.

© 1998 - 2017 by Ellis Walentine. All rights reserved.
No parts of this web site may be reproduced in any form or by
any means without the written permission of the publisher.

WOODCENTRAL, P.O. BOX 493, SPRINGTOWN, PA 18081