Topakustik Classic 18.5/2.5 M These grooves are the ideal solution for standard absorption requirements. As with all centre-to-centre distances, the wide grooving also comes with 2 mm, 3 mm and 4 mm grooves. Planks Thanks to the precise tongue and groove connection, planks result in an attractive surface with a joint-free appearance, because the connecting joint matches the dimension of the grooves. The planks permit simple and flexible assembly. They can be installed by stapling to a timber batten. Spruce / White Fir (ARIA-Plus) Sound absorption data acc. to ISO 354 Suspension height: approx. 216 mm approx. 56 mm with acoustic fleece and Mineral wool 30 mm (60 kg/m3) * During planning, the axial dimension of 21.33 mm must be taken into account. Topakustik AG  |  Obseestrasse 11  |  6078 Lungern  |  Schweiz T +41 41 679 73 73  |  [email protected]  |  www.topakustik.ch CHE-101.964.094 MwSt A+ und FSC Produkte sind gekennzeichnet / A+ and FSC products are marked / Les produits A+ et FSC sont étiquetés / Prodotti A+ e FSC sono contrassegnati