Performance table for double and triple 3 mm IGUs: U-factor (metric & imperial), SHGC, and UV transmittance. Lower U and lower UV are better.
Summary of Cardinal insulated glass units (3 mm, argon, warm-edge): Double—Clear/Clear, LoE-272/Clear, LoE-366/Clear. Triple—Clear/Clear/Clear, 180/Clear/180, 272/Clear/180, 366/Clear/180. Columns show U-factor (Btu·h⁻¹·ft⁻²·°F⁻¹ and W·m⁻²·K⁻¹), SHGC, and UV transmittance.