MARVIN. Integrity Windows and Doors has introduced a triple-pane with argon glazing option for its Wood-Ultrex casement and awning windows. The units feature three panes of glass and argon gas for a U-factor of 0.18 to 0.20, which means that it has superior insulating properties, keeping heat inside the home to help lower heating bills. 888.419.0076. www.integritywindows.com.
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