I am looking to install the Anderson 400 series casement windows in my home.The windows will include the High-PerformanceÃ¯Â¿Â½ Low-E4Ã¯Â¿Â½
I want the glasses for noise reduction and for security.
My question is on the STC OITC rating. This window has an stc rating of 31 and a oitc of 27. The tested size for those rating are 31.5 x 71.9 in. I will be adding 2ft x 4ft casements. Will my stc / oitc rating be less or more, due the smaller windows.