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Glass Performance Chart - All Weather Windows

Code Description U‑Value R‑Value Solar Heat Gain Clear Dual Dual pane, clear glass, no coatings 0.480 2.084 0.760 Clear Tri Triple pane, clear glass, no coatings 0.310 3.226 0.685 LOW‑E HS1‑C180 Dual pane, one Low‑E coating, Argon 0.260 3.846 0.685

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