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![GreenGuard GG300R 40mm 1.25m x 0.6m (Pack of 10)](http://www.cutpriceinsulation.co.uk/cdn/shop/files/gg300r_b79a5f8e-268f-47a5-af93-fcf290b03d40_grande.jpg?v=1721999298)
Kingspan GreenGuard GG300R 40mm is a high performance rigid extruded polystyrene insulation.
It offers thermal conductivities as low as 0.034 W/m·K, and is used to insulate inverted roofs, basements, car park decks, and heavy-duty commercial, industrial and cold store flooring.