Technical Information Dimensional Tolerance: T2 Dimensional Range: R1 Durability against freeze/thaw: F2 Active Soluble Salts Content Category: S2 Gross Dry Density: 1500 kg/m3 Compressive Strength: Greater than 40 N/mm2 Water Absorption: Less than 10% Thermal Conductivity: 0.62 W/m.K-50%; 0.69 W/m.K-90% Dimensions: 215mm x 102.5mm x 65mm Carlton 65mm Moorland Sandfaced clay facing brick