- Ultraviolet (UV) light block calculations performed using Lawrence Berkeley Laboratories Window 4.1 program. Percentages indicate amount of UV transmittance blocked from the interior using a ¾” glazing unit.
- Visible light transmittance indicates the amount of outside light reaching the interior as calculated using center of glass. Higher percentages mean more outside light reaches interior.
- U-factor represents the amount of heat transfer as measured in accordance with NFRC 100-2001, calculation uses total window unit, and assumes ¾” glazing with a ½” airspace. Lower is better.
- Solar heat gain coefficient (SHGC) measures the amount of solar radiation entering the building. As measured per NFRC 200-2001 with the Window 4.1 and Frame 4.1 modeling programs. Lower is better.
Elor recommends following installation standards in your local building codes, and the instructions found in the following AAMA publications:
Replacement: AAMA 2410-13U: Standard for Installation of Windows with an Exterior Flush Fin Over and Existing Window Frame.
Replacement: CAWM 420-97: Standard for Installation of Block Frame Windows utilizing an Existing Perimeter Wood Frame.
Replacement: AAMA 2400-10: Standard for Installation of Windows with a Mounting Flange in Stud Frame Construction.