Upgrade Advantages

Better, Best, Ultimate.  Our standard window performance package exceeds the Energy Star qualification guidelines.  You can upgrade your window for even more energy performance and savings. 

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Better Window Performance. 
Our BETTER package is standard here. An Envirosealed window with our high performance LowE and the Inverted balance for durability.  Add argon for more insulation and it exceeds Energy Star guidelines.  
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Best Energy Efficient Window. 
Our BEST performance package includes an Envirosealed spacer, Argon Gas and our next generation 366 LowE glass. You can upgrade with an Envirosealed Duralite spacer for even more performance.  And you can add our constant force balance and cover system in our 700 series windows if preferred. 
Ultimate Triple Glaze
Ultimate Window. 
Our ULTIMATE performance package includes an upgraded Envirosealed Duralite spacer in a triple glazed window with your choice of high performance 1-2X LowE glass.  Available in the 700 Series window only. 
Beyond Performance by Design.
Our performance package includes your energy efficiency options, established NFRC ratings, our standard window features, plus the 700 series TrustGard advantages!  

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