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![XTRATHERM Safe-R SR/PR 40mm (Pack of 7)](http://www.cutpriceinsulation.co.uk/cdn/shop/products/safe-r-xtratherm_f71ecef8-178f-4e6d-98c3-82d82943f63d_grande.jpg?v=1668429883)
Xtratherm Safe-R SR/PR 40mm is a superior performance phenolic insulation. It is faced with low emissivity foil facings on both sides and has a Lambda value as Low as 0.020 W/mK.
Xtratherm Safe-R is sold in packs only.
Safe SR/PR 40mm is sold in a pack of 7 boards.