300 New Construction


EcoShield Windows


NFRC Testing Chart
Effective Date: March 5th, 2018

Thermal Performance Data - 300 Double HungEnergy Star
Glass TypeU-ValueSHGCVLTCRCompliance
High Perf. Low E000
Energy Star U40.230.270.4851N,NC
Energy Star III0.270.370.5252NC
Low E w/ Argon0.270.280.5252NC


Thermal Performance Data - 300 Picture WindowEnergy Star
Glass TypeU-ValueSHGCVLTCRCompliance
Low E w/ Argon0.250.310.5765N,NC
Energy Star U40.250.300.5265N,NC
Energy Star III0.250.400.5765N
High Perf. Low E0.290.310.5760NC


Thermal Performance Data - 300 Rolling WindowEnergy Star
Glass TypeU-ValueSHGCVLTCRCompliance
Energy Star U40.240.270.4751N,NC
Energy Star III0.280.370.5264NC
Low E w/ Argon0.280.290.5263NC
High Perf. Low E0.320.290.5259


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EcoShield Window Systems, a quality product of Kasson and Keller Inc.
Manufacturing replacement windows, new construction windows, and storm windows since 1947

Product information on this site is subject to change without notice.
Please contact your dealer or customer service representative for the most up to date information.