Products > Optim-R > Optim-R > Overview Optim-R Next generation insulation solutions Optim-R: optimum performance rigid vacuum insulation panel Properties Download PDF Thermal conductivity (insulant thickness) 0.007 W/m.K (aged design value) Compressive strength at 10% compression ≥ 160 kPa Product Thickness 20 - 40 mm Product Length 300 - 1200 mm Product Width 300 - 600 mm