Storax Acoustic Louvre ST-448-225

Storax acoustic ventilation grilles provide optimal airflow and acoustic performance. The wall grilles comply with the standards of the Dutch Building Decree and are the solution for creating a closed façade. The acoustic grille is made from aluminum profiles and available in all RAL colors or anodized finishes. The slats are fitted with acoustic damping material (non-combustible mineral wool). Easy and invisible installation in the wall opening.

Specification

Material: made from aluminum profiles AlMgSi 0.5 (according to EN 12020-2); acoustic damping material: non-combustible mineral wool; standard stainless steel mesh 304 – 6 x 6 mm; 100% stainless; finish: natural or bronze anodized (20 microns) or powder-coated in all possible RAL, Sikkens, NCS, and Interpon colors (60–80 microns). Dimensions: slat pitch: 150 mm; minimum dimensions: 250W x 410H; height in increments of 150 mm; installation depth: 218 mm; frame flange: 55 mm. Mounting: wall anchor: mounted using a wall anchor, two possible positions in the frame depending on wall thickness; screws: screwed from the outside through the frame flange (standard or custom drilling pattern). Sealing options: PU sealing strip for water infiltration protection (optional); silicone seal: frame flange can be fully sealed around the outside with silicone (optional). Technical data ST-448-225: Airflow (EN 13030); K-factor (intake): 20.39; K-factor (exhaust): 23.11; Ce coefficient: 0.222; Cd coefficient: 0.208. Comfort (EN ISO 140-10, EN ISO 717-1): sound attenuation in open position Rw(C;Ctr): 14 (-0;-3) dB; visual free area: 54%; physical free area: 34%; water tightness: Class C (0.5 m/s); profile width: 225 mm; weight per m²: approx. 29 kg. Sound attenuation per frequency: 63 Hz: 9.6 dB; 125 Hz: 5.3 dB; 250 Hz: 4.7 dB; 500 Hz: 8.4 dB; 1000 Hz: 16.6 dB; 2000 Hz: 21.5 dB; 4000 Hz: 16.7 dB.

Technical specification