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More window area generally means more heat loss. This unfortunately causes higher heating and cooling costs, but with energy-efficient Tech Plus Series II sliding windows you can still enjoy the beauty from a wider perspective.
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• A fusion-welded sash and mainframe for added strength and rigidity. Tough, extra-thick extrusion walls provide the ultimate welding strength.
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• Multi-wall extrusion for superior welding strength.
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• Hidden screen track produces clean lines and added beauty.
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• Double-barrier weatherstripping for superior protection from air and water infiltration.
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• Nylon-encased dual brass roller system.
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• Theft deterrent locks.
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• Lifetime Transferable Glass Breakage Warranty.
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