How do sealed glass units affect a window’s overall Window Energy Rating (WER)?

The sealed glass unit energy rating plays a crucial role in the final WER of a window. Even with an efficient frame, a low quality sealed glass unit energy rating can reduce overall performance. To achieve the best sealed glass unit energy rating, choose units with low U-values and high solar gain. 

U-Values WER - Window Energy Rating Sealant Desiccant Gas Spacers Manufacture Product