Blog

INTUS Windows is pleased to announce the new ASTM E90 acoustic test results for the 10/14/4 insulated glass configuration across several products in the Supera line. The testing provides verified sound transmission data for architects, consultants, and project teams evaluating acoustic performance requirements. 

The newly tested configuration applies to the Supera Fixed, Supera Inswing Casement, and Supera Outswing Door, providing updated STC and OITC ratings based on laboratory testing. These results offer a reliable reference for project specifications and acoustic performance documentation, helping design professionals make more informed glazing selections for noise-sensitive applications. 

Testing was conducted in accordance with ASTM E90, the industry-standard method for measuring airborne sound transmission through building elements. The results provide verified acoustic performance data for the 10/14/4 insulated glass configuration across three Supera product types. 

Two acoustic performance metrics are commonly used to interpret these results. 

• STC (Sound Transmission Class) measures how effectively a window or door reduces common airborne sounds such as speech, television noise, and other indoor or neighborhood sounds.  

• OITC (Outdoor-Indoor Transmission Class) evaluates performance against lower-frequency exterior noise sources, including traffic, trains, and aircraft.  

Together, these ratings provide architects and specifiers with valuable information when evaluating glazing configurations for projects where acoustic comfort is an important design consideration.

Accurate, verified performance data is essential when specifying windows and doors for projects where acoustic comfort is a priority. Laboratory-tested results provide architects, consultants, and building professionals with reliable information they can use throughout the design and documentation process. 

Replacing Previous 4/14/10 Ratings 

These newly published ratings replace the previous acoustic values associated with the flipped 4/14/10 glass configuration for the Supera Fixed, Supera Inswing Casement, and Supera Outswing Door. 

Moving forward, architects, consultants, estimators, and project teams should reference the updated 10/14/4 test results when evaluating acoustic performance for these products. Using the latest tested values helps ensure consistency across specifications, performance calculations, and project documentation. 

Acoustic performance is an important consideration across a wide range of building types, particularly in environments where exterior noise can impact occupant comfort, productivity, or overall user experience. Verified STC and OITC data helps project teams better evaluate glazing configurations and select products that align with project-specific acoustic goals. 

The newly tested 10/14/4 configuration may be particularly relevant for applications such as: 

• Multifamily buildings, where occupant comfort and privacy are key design priorities 

• Urban residential developments located near busy roads, transit corridors, or commercial districts 

• Hospitality projects, where guest experience can be influenced by exterior noise levels 

• Educational facilities, where minimizing distractions supports learning environments 

• Mixed-use developments, which often combine residential spaces with retail, office, or entertainment uses.

  By providing tested acoustic performance data for the Supera Fixed, Inswing Casement, and Outswing Door, these results give architects and consultants additional information to support glazing selection and specification decisions during the design process. 

As acoustic performance continues to play an important role in building design, access to tested and documented data is essential for making informed specification decisions. These updated results help ensure that project documentation reflects the latest available performance information. 

At INTUS Windows, we remain committed to providing transparent, verified product performance data that supports architects, engineers, and building professionals throughout the design and specification process. Through ongoing testing and product validation, we continue to deliver the information needed to support high-performance building envelope design.