FGIA updates guidelines for insulating glass dimensional tolerances in fenestration products

FGIA updates guidelines for insulating glass dimensional tolerances in fenestration products
Photo source
FGIAonline.org

Date: 23 May 2025

The Fenestration and Glazing Industry Alliance (FGIA) has updated guidance for the dimensional tolerances of insulating glass units (IGUs) produced for installation in fenestration products.

IGMA TB-1200-25, Guidelines for Insulating Glass Dimensional Tolerances, is now available for purchase in the FGIA online store. This document was last updated in 2016.

IGMA TM-1200 is intended to assist in achieving successful performance of IGUs, both dual and triple units. These guidelines are for the consideration and use of manufacturers and other interested parties in their own independent business judgment while also considering their particular glazing or installation configuration.

“This technical bulletin provides guidelines for typical glass tolerances in the absence of specific information from the glass manufacturer,” said Scott Corley (ODL), Vice Chair of the FGIA Dimensional Tolerances Task Group. “This revision removed some redundancies with other documents and cleaned up some tables and units.”

IGMA TB-1200-25, as well as other documents available from FGIA, may be purchased from the online store at the discounted member rate of $18 or the non-member price of $36.

For more information about FGIA and its activities, visit FGIAonline.org.

600450 FGIA updates guidelines for insulating glass dimensional tolerances in fenestration products glassonweb.com

Others also read

700 Santana Row brings a new dimension to San Jose’s acclaimed Santana Row district by offering a seamless blend of modern design, sustainability and vibrant public spaces.
Light, structure, and community come together in the new extension of Kungsbacka’s Sports Hall—featuring OKALUX EVO for a bright, energy-efficient design.
Glasstech Asia & Fenestration Asia 2025 is just months away, and the official visitor pre-registration will open soon.
At the heart of CSU Channel Islands, OKALUX glass helps create a bright, comfortable study environment by softly diffusing natural light throughout the library.
BGT supplied advanced glass solutions for Newark Liberty International Airport’s new Terminal A, supporting the project’s bold architectural vision with high-performance, energy-efficient glazing systems.
Registration is now open for the Fenestration and Glazing Industry Alliance (FGIA) Western Region Virtual Summit, taking place online September 10.

Add new comment

From industry

Polígono Industrial El Bayo, parcela I, 19
24492 Cubillos del Sil León
Spain