NFRC Information

NFRC Data for Minnkota Windows and Doors

NFRC Ratings

The table below illustrates the NFRC data for Minnkota Windows and Doors.  The following terms are used in NFRC data and are defined as follows:

U-Factor: Rate of heat loss.  The lower the U-Factor, the greater a window's resistance to heat flow and the better its insulating properties.

SHGC (Solar Heat Gain Coefficient): The fraction of incident solar radiation admitted through a window.  It's expressed as a number between 0 and 1.  The lower the SHGC, the less solar heat it transmits.

VT (Visible Transmittance): An optical property that indicates the fraction of visible light transmitted through the window.  The lower the number, the greater amount of "tint" appearing in the glass.

AI (Air Infiltration): The unintentional, or accidental, introduction of outside air into a building, typically through cracks in the building envelope and through use of doors for passage.  Also known as air leakage.  Number given is a measurement of cubic feet per minute by square feet.
 

1800 Aspekt Casement Window

700 Series Double Hung Window

700 Series Double Slider Window

1800 Small Picture Window (Non-Operating)

7500 Sliding Patio Door

700 Series Single Hung Window

700 Series Single Slider Window

190 Series Single Hung Window

190 Series Single Slider Window

190 Series Picture Window

Euro Series Window

Euro Series Door (currently testing, numbers will be posted once certified)

* All ratings based on testing with Endur spacer, 3mm glass and Argon
* Lo-E is on surface #2 of all units
* Lo-E is on surface #2 and #5 of all double Lo-E triple pane units
 

Energy Efficient Window & Door Performance Criteria