Audited Supplier
NCC is a leading manufacturer of noise cancelling louvers worldwide, with sturdy, durable, and high-performance products that have been applied multiple times worldwide. The application scenarios of NCC noise cancelling louvers include:
Air inlet of ventilation system Air inlet of outdoor units such as cooling towers
Machine room air inlet Data center vents
Water pump room air inlet
Transformer/substation sound insulation room heat sink boiler room
Ventilation louvers for construction machinery radiators
Ventilation openings on soundproof enclosures
Wind turbine vent
Dimension & Appearance
NCC louvers can be made into sound absorption louvers with a single or double leaf structure with a minimum structural height of 850mm. NCC can provide louvers and doors of various sizes, just to fit the size of the installation hole.
(The standard height of a single leaf door is 1250mm × 3000mm, and the standard height of a double leaf door is 2500mm × 3000mm.)
All doors are equipped with joint locks, latches, and handles
Soundproof doors can be provided with bird guards and insect nets upon request
The door can be provided with polyester powder coating
Can be made of galvanized steel, stainless steel, or aluminum
The main characteristics and advantages of NCC acoustic louvers are:
Equipped with weather resistant sealing plates to prevent the infiltration of rain and snow
The modular design can make the louvers suitable for use with any size of "vent"
It can serve as an independent barrier around equipment or be integrated with building walls
The blades of the silencing louver are arranged horizontally, reflecting aesthetics and enhancing acoustic performance
It can be equipped with stainless steel or galvanized bird nets, as well as insect nets
Meet anti-theft requirements and standards
Wing curved louver - Sound Transmission Loss (dB)
| Octave Band Centre Frequency,Hz | Louvre Depth (mm) | 63 | 125 | 250 | 500 | 1k | 2k | 4k | 8k |
| Model NR | 300 | 5 | 6 | 11 | 12 | 12 | 15 | 12 | 10 |
| Model 2NR | 600 | 6 | 11 | 15 | 20 | 24 | 27 | 26 | 21 |
| Model NLP | 300 | 4 | 6 | 8 | 10 | 13 | 9 | 7 | 6 |
| Model 2NLP | 600 | 5 | 10 | 13 | 15 | 22 | 18 | 15 | 13 |
Linear Louver - Sound Transmission Loss (dB)
| Octave Band Centre Frequency,Hz | Louvre Depth (mm) | 63 | 125 | 250 | 500 | 1k | 2k | 4k | 8k |
| SL-100 | 100 | 5 | 5 | 6 | 7 | 9 | 14 | 16 | 14 |
| SL-150 | 150 | 5 | 6 | 8 | 10 | 14 | 18 | 15 | 14 |
| SL-150L | 150 | / | 5 | 6 | 9 | 10 | 12 | 13 | 13 |
| SL-200 | 200 | 5 | 6 | 8 | 12 | 20 | 16 | 15 | 15 |
| SL-300L | 300 | / | 6 | 9 | 11 | 18 | 22 | 21 | 20 |
| SL-300 | 300 | 6 | 7 | 10 | 11 | 17 | 17 | 14 | 13 |
| SL-600 | 600 | 6 | 8 | 11 | 24 | 30 | 33 | 29 | 29 |
NCC Acoustic Laboratory - A Laboratory Professionaly Committed to Serving Customers
We exert every ounce of our strength to construct a high-end, avant-garde laboratory endowed with autonomous control capabilities. For all bespoke products, be it in terms of specifications, dimensions, or acoustic requisites, prior to entering the mass production phase, we shall enforce rigorous and meticulous pre-production sample testing procedures. Only upon thorough confirmation that all indicators are up to par will we invest a considerable amount of human and material resources to embark on mass production endeavors, thereby effectively guaranteeing that each and every batch of large-scale goods delivered to clients possesses outstanding quality.
As depicted in the illustration, the external noise of the laboratory attains 80.1 dB, while through random measurement, the internal acoustic laboratory drops to 36.4 dB or even lower. The elevated standard of sound insulation not only ensures the accuracy of the experimentation but also furnishes a robust guarantee for the test outcomes.
All Reports can meet the American Standars, the sound testing we did with Intertek
Over the years, NCC has developed into a turnkey supplier of noise control, providing customers with one-stop solutions from concept to completion, including solution consulting, synchronous research and development, construction drawing design, structural design, fluid calculation, air conditioning and electrical system engineering, product manufacturing, installation and commissioning, and testing and acceptance services. With over 70 years of experience in noise control and acoustic engineering, we will provide you with solutions that meet your needs and budget. We look forward to working with you.
