Oppeo Perforated acoustic gypsum board ceiling, can be punched into many different kind of perforation and layouts. Most popular patterns are 10x10 square holes, 12x12 square holes, 3x3 mirco hole, 6mm, 8mm, 15mm round hole, irregular holes with 8/15/20mm. Seamless perforation will be our bright point, which can give the whole continuous perforation on the wall or ceiling and it keep the original size of board, no need to do cutting.