Our NEW 'Thermally Broken' Flat Glass rooflights are the ideal choice for applications where the raised profiles of conventional modular rooflights are not practical or desirable. Product information The NEW 'Thermally Broken' Flat Glass Fixed/Unvented option is available in 11 sizes from stock & delivery would be up to 10 working days.. The glass we supply is either 30.8mm double glazed units comprising of 6mm clear toughened glass outer and 8.8mm low-e laminated inner pane or 32mm units comprising of 6mm clear toughened glass outer and 6mm low-e HST toughened inner pane, as standard. The glazing elements are contained within a thermally broken, extruded aluminium frame, to current British and European standards: BS EN 12020-1:2001. Glazing frames are polyester powder coated to BS 6496 and BS EN 12206-1:2004. The extruded aluminium polyester powder coated frame is available in: Anthracite Grey: RAL 7016. The product has a thermal value or U-value of 1.4 W/m2k & 1.1 W/m2kcentre pane value which exceeds the requirement for Part L compliance and is tested to CWCT TN 66 & 67 Class 2 / ACR (M) 001:2005 and is classed as a 'B' Non Fragile rooflight. The roof light also has an AA Fire Rating.The Light Transmission is 78% & the rooflights weigh approximately 43kg's per m2. The Flat Glass product is suitable for use with all popular flat roof finishes & comes with 10 year guarantee*. *Ask for more details.