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From: New + Notable

The WD66 wood folding glass wall system comes with krypton-filled Heat Mirror glazing, providing an energy-efficient solution for large openings. The glass has a 0.23 U-factor and an SHGC of 0.31. The doors can be installed anywhere a traditional wall would stand and come in openings from 8 feet to 40 feet. 800.873.5673. www.nanawall.com.