Submit Optical Properties

Spectral Data File Submission Information

The documents below detail the optical property submission process.  Glazing suppliers must submit specific samples to an optical property testing laboratory, or use their own testing facilities, instructing that lab to provide specific data outlined in the documents below.  After the data submission, LBNL alerts NFRC of a supplier's submission marks (adds a # sign) in the International Glazing Database( IGDB) indicating the data are acceptable for NFRC simulations. NFRC 302 governs the peer review process glazing data must go through before NFRC acceptance.  Six times each year, LBNL publishes an IGDB update showing those marks (indicated by a # sign) denoting NFRC acceptance.  Finally, simulators may now use the "marked" data to calculate insulating glazing unit performance.

Film manufacturers and laminate suppliers must also submit specific sample to a testing lab. Please call Ray McGowan at 240-821-9510 with specific questions.

• Lawrence Berkeley National Laboratory (LBNL) Documents:

  • LBNL IGDB general information
  • Brief Summary of How to Prepare and Submit Data to the IGDB

• NFRC Documents

• Fee Schedule (current schedule shown on this page)
• NFRC 200-2004 (click here to go to Technical Documents page)
• Film property submission instructions (aftermarket film rating only)

• Fill out and fax these forms to NFRC HQ @ 301-589-3884 or email to rmcgowan@nfrc.org :

• Glass Measurement Location Information
• Glass Supplier Contact information