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ANSI/NFRC 203-2023 Procedure for determining visible transmittance of tubular daylighting devices

Publication Year

2023

Document Status

Current

Abstract

Test method for measuring the visible transmittance (VT) of tubular daylighting devices and determining the annual visible transmittance rating according to a prescribed weighted-average method.

Publisher Information

National Fenestration Rating Council

An independent US non-profit organization that establishes objective window, door, and skylight energy performance ratings to help compare products.

6305 Ivy Lane
Suite 410
Greenbelt
NFRC-US
USA

Website: http://www.nfrc.org/
Email: info@nfrc.org
Tel: +1 (301) 589-1776