Page 148 - USG-Ceilings Plus Flip Book

sound absorbing materials ULTRA-SORB WHITE ULTRA-SORB BLACK Ultra-SorbTM Reconst. Cotton Batts: • Batts can be used in lieu of or in addition to non-woven acoustical fabric. Use acoustical fabric beneath Ultra-Sorb batts if perforations exceed 3mm (1/8”) diameter. • Ultra-Sorb: 85% pre-consumer recycled content. • Noise Reduction Coefficient (NRC): Up to NRC=.95 for ≥5% open perforated area. • Fire Class: BS476 Part 6/7 Class 1/0 (Class A). • No VOC. Fiberglass Batts: optional. 146 THICKNESS AS REQUIRED