£54.00 (inc. VAT) £45.00 (ex. VAT)

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This great little kit lowers the u-value in a standard sun tunnel installation. It is becoming increasing important to have a low u-value and in some instances a legal requirement. Therefore, the trim ring has been insulated and an extra two layer pane has been added.

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Design Tool

Assist with window selection and all insulation components

Delivery within 7 Working Days

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Further Detail

  • Lowers the u-value from 2.9 W/m2K to 1.8 W/m2K 
  • Discrete design 
  • Easyily mounted on already installed sun tunnels.