A Commercial Spec Metal Skin |
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Wood End Blocks |
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20,000-cycle Torsion Springs |
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Welded Jamb Brackets |
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14-gauge Galvanized Steel Track |
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White Nylon Rollers with 11-ball Bearings |
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Sealed Thermo-pane Windows & One-piece Injected Window Frames |
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Window frames of polypropylene |
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