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Energy Data Search Tips

Energy data is included both for standard products and various combinations of glass options that have gone through the NFRC testing process. The information includes:


To find energy data for:

Casements & Awnings

Double Hungs

Ogee & Beveled Direct Sets



Mull Combination Units: (Bows, Bays, Picture Windows, etc.)

Energy ratings for combination units depend upon the windows used to create the whole unit. For example, to find data for a casement picture window combination with two crank-out flankers & one matching center stationary studio/picture unit:

Energy data not currently available:

Note: Ratings for products with obscured or wired glass and/or stained glass shall be deemed to be equivalent to the ratings for clear glass (NFRC 200 Section 4.5.G).

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