Upcoming Scheduled Maintenance for USGBC.org
USGBC.org will be offline from Friday, May 6 at 9:00 pm EST until Saturday, May 7 at 12:00 pm EST. Email us or call 1-800-795-1747 for assistance. Thanks for your patience.
Internet Explorer versions 7 and older have known compatibility and security issues with modern
web standards which affect next generation Web 2.0 websites. In our attempt to deliver a superior
experience, we no longer support Internet Explorer versions 7 and older.
Please upgrade to the latest
version of Internet Explorer, Firefox, Safari or Chrome.
How Bright Is the Light From A Tubular Skylight?
Natural Light Tubular Skylights illuminate the equivalent of up to 300 to 1,450 watts of incandescent lighting varying on the model installed (see chart below), but without the heat gain of traditional lighting. Additionally, Natural Light Tubular Skylights filter out 99% of the harmful UV rays that fade furniture and carpeting. And because they operate using free solar power, Natural Light Tubular Skylights are energy efficient and will help reduce your electric bills!