The Okna double hug 400 series Deluxe is an excellent entry level replacement window. As a Buffalo homeowner you appreciate just how cold it can get so an investment in energy saving windows like this one can help lower those utility bills.
- 33% Better than Energy Star® minimum
- Fully welded sash and welded frame
- Excellent energy efficiency
- Heatseal® warm edge for lower condensation
- A durable and energy efficient double hung window.
- The highest performance rating of the 400 series options.
|Glazing Option||U-Value||SHGC||VT||CR||Minimum*||Energy Star Minimum|
|Our Windows||Minimum||Industry Minimum|
|AAMA Rating (38 x 63)||R50||R15|
|Air Infiltration cfm/ft2||0.05||0.3||600%||Better|
|Water Penetration mph||56||33||70%||Better|
|Structural Integrity mph||171||94||82%||Better|