Perfosound Basic Pine sound-absorbing panels are suited for application on walls and ceilings. Basic Pine has a plywood core with a spruce face (available as white varnished, White Wash and unprocessed). Perforation holes in the panel lead soundwaves to the back structure, where they are absorbed by mineral wool. The diameters of the perforation holes can be varied in sizes from 4 to 12mm. Also available in several patterns. Standard proportions: 2420x1200mm (customized proportions also available). Closed frames at the edge of the panel ensure it to have a neat appearance.