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Monarch Materials Group Inc.

Monarch Window Performance Values


Premiere V™Vinyl Pro
Glass Type U-Value SHGC U-Value SHGC
Clear .46 .61 .47 .64
Low-E .28 .21 .29 .22

Monarch NFRC Ratings

These are the performance values for Monarch’s Windows. Compare these values to the Energy Star qualification criteria below. The Energy Star qualification should be used as a benchmark to help builders and home owners choose the proper windows.

1 – The rate of heat loss is indicated in terms of the U-Factor. The lower the U-factor, the greater a window’s resistance is to heat flow and the better its insulating properties.

2 – The Solar Heat Gain Coefficient (SHGC) is the fraction of incident solar radiation admitted through a window, both directly transmitted and absorbed and subsequently released inward. The lower a window’s solar heat gain coefficient, the less solar heat it transmits.