ASTM E90 Acoustic Performance – PrimeAlux Privacy Plus Fence
This page summarizes an Intertek laboratory test report completed under ASTM E90, a standard method used to measure airborne sound transmission loss through a test specimen under controlled conditions. The report also provides STC and OITC ratings derived from the test data.
What ASTM E90 measures
ASTM E90 measures how much airborne sound is reduced when passing through a specimen installed between two test chambers. The lab setup is designed so the specimen is the primary path for sound transmission between the rooms.
What STC means
STC (Sound Transmission Class) is a single-number rating commonly used to compare assemblies based on sound transmission loss data (often most relevant to speech-frequency ranges).
What OITC means
OITC (Outdoor-Indoor Transmission Class) is another single-number rating derived from sound transmission loss data, intended to better reflect certain outdoor noise spectra (including more low-frequency content).
Frequently Asked Questions
Yes. This is a laboratory test report done by InterTek. It summarizes results for the sample that was tested.
ASTM E90 is the measurement method; STC and OITC are calculated using related ASTM classification standards listed in the report.
Laboratory ratings are useful for comparison, but outdoor sound behavior depends on site conditions and sound paths.
Use the PDF as the official lab record and keep your submittal specific to the configuration being quoted/installed (height, layout, application). If a reviewer needs confirmation for a particular project scenario, it should be evaluated by the appropriate authority/consultant using the report and project details.