OITC steps sound intensity reduction in decibels, just like STC. OITC isn’t at the same time-acknowledged as STC, however it’s arguably a better way to level soundproof glass windows since it precisely targets loud noise from the lower to mid-frequency array. NFRC rankings are provided on all ENERGY STAR Accredited https://rowanavnew.blogkoo.com/how-thermal-insulation-solutions-in-fitzrovia-can-save-you-time-stress-and-money-45825811