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®
Company. All rights reserved. R-TEC Automation
®
is a registered trademark of the Rowley
®
Company, LLC.
7
Southern Hemisphere
LIGHT TRANSMISSION
Light transmission can vary widely with the number of window panes and types of coatings. The type of glass needs to be
assessed. Approximate transmission factors are:
Glass Type
Transmission Factors
Single Panel
70%
Double Panel
63%
Double Panel with bronze tint
30%
Double Panel with selective low-e coating
45% - 57%