What's New at AGM

Okna Windows exceed The Department of Energy's R5 Window Requirements

In accordance with specification requirements provided by the U.S. Department of Energy, to be considered an R-5 Window, windows must achieve at least a 0.22 U-value for operable units and 0.20 U-factor for fixed. Additionally, they must be certified to ASTM E2190 for insulating glass durability, NFRC 100/200 for U-factor/Solar Heat Gain and AAMA/WDMA/CSA 101/IS2/A440-05 for air, water and structural performance. Windows that meet these requirements are conidered the most energy efficient.