CALM S18-300-V
Product Information
The Colt CALM S18‑300‑V is a high‑performance acoustic louvre designed for environments needing ventilation and noise control. Its 300 mm chevron blade provides enhanced mid to high‑frequency attenuation, achieving Rw (C, Ctr) 23 (‑2, ‑5) as tested to BS EN ISO 10140‑2:2021, while maintaining aerodynamic efficiency (Cv 0.144). With a solid metal front and rear, modular design, robust steel construction, and finish options, it delivers flexibility, durability, and long service life.
Product Highlights
- 300 mm chevron blade profile provides superior noise reduction and airflow
- Certified acoustic performance tested to BS EN ISO 10140-2:2021
- Modular design enables walls or runs in any required width or height
- Pre-punched fixing points allow safe, quick two-person installation
- Panel joining kits support longer spans with fewer structural supports
Technical Information
Acoustic Performance
| Octave Band Frequency (Hz) | Sound Reduction Index (dB) |
| 125 | 6.9 |
| 250 | 12.2 |
| 500 | 18.1 |
| 1000 | 26.1 |
| 2000 | 29.1 |
| 4000 | 28.5 |
Contact our dedicated acoustic louvre team by email at louvre@uk.coltgroup.com for specific calculations based on your project requirements
Aerodynamic Performance
| Face Velocity (m/s) | Pressure Drop (Pa) |
| 0.0 | 0 |
| 0.5 | 7 |
| 1.0 | 29 |
| 1.5 | 65 |
| 2.0 | 116 |
| 2.5 | 181 |
| 3.0 | 260 |
| 3.5 | 354 |
Contact our dedicated acoustic louvre team by email at louvre@uk.coltgroup.com for specific calculations based on your project requirements
Contact Us
For more information about the Calm S18-300-V, or to find out how Colt can help with your project, get in touch with our team today.