Designed for use with the AHL-150 acoustic louver, the ST Series is able to be installed onto the rear of all louvers within the Holyoake range for improved attenuation performance. The acoustic insulation has been engineered to maximise sound absorption whilst minimising moisture absorption. Even when exposed to an atmosphere of 50°C at 90% relative humidity for four days it showed a moisture absorption by weight of less than 0.03%.
Insulation compliant with ISO 9705.
Group 1-S Classification with a smoke production rate of less than 5m/s².
Tested to AS 1530.3 receiving a 0 rating for Ignitability Index, Heat Evolved Index, and Spread of Flame Index.
Tested to AS 1530.3 receiving a 2 rating for Smoke Developed Index.