Vibration isolators, Seismic restraints, Noise Control & AcousticNoise Control & Room Acoustics
Standards this line is built to
The designations below are cited by the products on this page. A specification is written in these, not in product names, so each one is set out with what it governs. Progress Horizon Trading supplies this line as an authorized distributor across Saudi Arabia.
ASTM E492
Impact sound transmission: the footfall equivalent of ASTM E90, summarised as an Impact Insulation Class.
ASTM E90
The laboratory measurement of airborne sound transmission loss: the raw data a partition's acoustic rating is derived from.
ASTM E413 (STC)
Sound Transmission Class: the single number that summarises an ASTM E90 measurement, used to compare partitions and doors.
ASTM E84
Surface burning characteristics: the flame spread index and smoke developed index a material is classified by. Class A is the usual requirement in an occupied building.
ASTM C423 (NRC)
Sound absorption measured in a reverberation room, reported as the Noise Reduction Coefficient. Absorption, not insulation: how much sound a surface soaks up rather than blocks.
ISO 11654
The international rating of sound absorbers, giving the single-figure αw used in European acoustic specifications.
UL 723
The same surface burning test as ASTM E84, published by UL. A product tested to one is tested to the other.
AMCA 300
The reverberant room method for measuring the sound a fan emits. The source of the sound power figures used in an acoustic calculation.
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UL 181
Factory-made air ducts and air connectors: the listing a flexible or fabricated duct carries.
NFPA 90A
Installation requirements for air conditioning and ventilating systems, including where fire and smoke dampers are required.