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16mm Insulating Glass Unit - two sheets of 4mm toughened seperated by 8mm spacer - ideal for reducing thermal transmission. |
Standard rails and stiles with glazing channel adaptor: |
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20mm Insulating Glass Unit - two sheets of 5mm toughened seperated by 10mm spacer. To reduce thermal transmission. |

| Series 541 sliding door panels will accept a variety of glass thicknesses. | |
Standard single glazing: |
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4mm Toughened glass - used in small doors in low wind load areas. |
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5mm Toughened glass - the most common glass thickness used in most wind load areas. |
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6.38mm Laminated glass - Not as strong as toughened glass but has good security and UV transmission properties. |
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6.76mm Laminated glass - Similar to 6.38mm but with a 0.76mm thick membrane separating the glass. |
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7.52mm Laminated glass - Similar to 6.38mm but with a 1.52mm thick membrane separating the glass. |
The alternative wide jaw stiles and rails will accept a variety of thicker glass types: |
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8.38mm Laminated glass - designed for very high wind load areas. |
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10.38mm Laminated glass - will give higher sound reduction than 6.38mm. |