Unmatched Performance with Perforated Acoustic Metal Mesh Featuring a Double-Layer Core

Application Scenarios

Perforated acoustic metal mesh with double-layer core is engineered for environments where standard single-layer acoustic solutions fail to meet noise reduction goals. It is ideal for modern transportation terminals, urban museums, power plant control rooms, and multi-functional commercial spaces. This double-core system offers enhanced mid-to-low frequency sound absorption, critical in large volumes where speech clarity, public announcements, or acoustic zoning are essential. It has been successfully integrated in semi-outdoor atriums, airport terminals, and transit-oriented developments. For flexible modular application, see our complete Acoustic Perforated Panels lineup.

Specifications and Acoustic Engineering

The panel system consists of two perforated metal skins—an outer decorative face and a rear acoustic shell—with a high-density mineral wool or melamine foam core sandwiched between. Panel depth ranges from 30mm to 75mm. Front perforations are typically 2mm–3mm in diameter, designed with 20%–28% open area. The rear layer is often microperforated to trap low-frequency energy. This dual-layer setup delivers an NRC of 0.90–0.95 in full system builds. Fabrication complies with ASTM E1414 and ISO 11654, tested in reverberation chambers with frequency curves from 125Hz to 4000Hz.

Design Considerations

Aesthetically, this system supports complex designs like curved ceilings, geometric wall sections, and column wraps. The dual-panel structure allows designers to vary visual openness while maintaining acoustic integrity. Panel finishes include woodgrain powder coating, matte black, anodized aluminum, or customized RAL colors. Custom panel perforation layouts are available for branding or signage functions. Integration with lighting grids, fire suppression, and HVAC registers is facilitated via demountable grid systems. Design documentation aligns with ASCE guidelines. If visual integration is a project priority, refer to our Decorative Perforated Panels for options.

Compliance and Certification

All components are fabricated under ISO 9001 and ISO 14001 quality and sustainability standards. Powder coating and adhesives are VOC-free and meet RoHS and REACH compliance. Fire performance is rated ASTM E84 Class A and EN 13501-1 B-s1,d0. These panels contribute to LEED v4 and WELL Building Standard credits, particularly in acoustic comfort and material health. Data is benchmarked against research from the Acoustical Society of America. Optional antibacterial coatings make them suitable for healthcare and lab spaces.

Case Study: Transit Terminal Sound Optimization

A major Asian transport hub underwent an acoustic retrofit after surveys found speech clarity below 0.45 on the STI scale in its 12-meter-high waiting area. Noise from trains, announcements, and passenger flow created continuous background echo, impairing both comfort and intelligibility. Prior use of fiberglass baffles was ineffective and difficult to maintain.

Our engineering team deployed a double-layer core perforated acoustic metal mesh system using 1.2mm aluminum panels with custom circular perforations on the front and micro-perforated galvanized steel on the rear. The core was 40mm mineral wool with fire-rated foil backing. Over 800m² of ceiling and beam wrap panels were installed using an aluminum suspension grid. After commissioning, STI improved to 0.71 and background reverberation dropped by 63%. To enhance safety on ramps and platforms, Anti-Slip Perforated Panels were also added. The design solution was featured in Architectural Digest’s infrastructure edition.

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