b'LOW E +Low E has the best light transmission properties compared to all competitor productsThe difference is clear with Low E+. This high quality glass provides excellent thermal performance and the ultimate in clarity thanksto a microscopically thin coating which is virtually invisible.Low E+ sealed units are perfect for general windowand door requirements to a performance capable of achievingA Window Energy Ratings (WERs).Technical PerformanceU-VALUE 1.2 W/m 2 K(4(16)4 unit with 90% argon gas filling)LIGHT TRANSMITTANCE 81%LIGHT REFLECTANCE 12%SOLAR FACTOR 73%BenefitsThe UKs no.1 choice for energy efficient glazing Excellent clarity Optimum balance of thermal insulation and comfort Eliminates cold areas around your windows53'