Features
The LSP acoustic grid is a high-performance, compact silencer defined by its one-of-a-kind ultra-thin baffles measuring just 20 mm. The sound-absorbing baffles can be oriented either horizontally or vertically. The latter configuration, due to the baffles’ thin profile, enables a high net open area of up to 75%, more than twice the average of comparable products. The range includes five models, with acoustic performance levels between 7 and 19 dB(A), as well as an exclusive baffle-less version for applications requiring unobstructed airflow.
Thanks to its modular design, the acoustic grille integrates seamlessly with the Quiet Leaf™ panel, ensuring continuous sound attenuation across all elements. Its compact dimensions allow installation in confined spaces, making it suitable for integration into soundproofing boxes, acoustic barriers, and soundproofing casings for air conditioners and heat pumps. With a net open area up to 100% greater than the average of comparable products and a low pressure drop, often below 5 Pa, these components are ideal for systems requiring high airflow and are commonly used with heat exchanger coils, radiators, chillers, air conditioners, and heat pumps.
Technical details of the acoustic grilles
- Internal Baffle Thickness: 20 mm
- Net Open Area: up to 75%
- Internal Sound-Absorbing Layer: Noise Layer™
- Damping Mass: Damping Bulk™
- Operating Temperature Range: -20°C to +70°C
- Sound Absorption Coefficient (αw): 0.90 – 0.9
Available models
The LSP™ noise grilles are available in five different models with performance ranging from 11 to 19 dB:
Model 290 Single
- Thickness: 290 mm
- Feature: single baffles, maximum open area
- Rw: 7–11 dB(A)
Model 350 super
- Thickness: 350 mm
- Feature: double baffles, fully paintable outer surface
- Rw: 13 dB(A)
Model 470 Single
- Thickness: 470 mm
- Feature: single baffles, directional flow
- Rw: 11–15 dB(A)
Model Baffleless™
- Thickness: 250–500 mm
- Feature: no internal baffles, uniformity and aesthetics
- Rw: 15 dB(A)
Model 580 Double
- Thickness: 580 mm
- Feature: double baffles, omnidirectional flow
- Rw: 19 dB(A)