Clear Self-Cleaning Double-Glazed Toughened Glass Unit Clear sealed unit with high 79% light transmittance and a self-clean coating that keeps the glass looking cleaner for longer. Manufactured using toughened safety glass that's 5 times stronger than standard panes, to provide homeowners with peace of mind, and architects and builders with greater opportunities. Reflects just 25% of solar energy to encourage heat build-up in colder locations, and offers a u-Value of 2.7. Two clear panes maximise 79% natural light Reflects up to 25% of solar heat Made from toughened safety glass Thermal efficiency of 2.7 u-Value Warm edge spacer reduces heat loss at edges Safer to handle due to arrissed edges Toughened safety glass, such as these BS EN 12150 approved units, are required for use in doors, low-level windows (where underside is less then 800mm from floor), and windows within 300mm of a door.
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