When picking glass for soundproofing, thicker glass is generally more practical than thinner glass. Glass thicknesses of single layers of glass commonly vary from one-eighth of the inch to at least one inch. OITC stands for outdoor/indoor transmission class. It ought to be evident what it measures from its identify. https://connerclfxm.full-design.com/new-step-by-step-map-for-acoustic-laminated-glass-81213799