A regular pattern of 10mm round perforations at 23mm centres combine to give Class C sound absorption and aw up to 0.65. 14.8% perforated area.
Gypsum boards perforated with regular or random patterns with sound absorbent black tissue backing as standard. Provides a monolithic appearance ready for on-site decoration. Boards can be dry curved down to a minimum radius of 5000mm. All Rigitone boards are supplied with Activ'Air technology as standard.