Rayeburn rough red facing brick with a textured side, measuring 215mm long, 102.5mm deep and 65mm tall. Ideal brick for many purpose including building strong foundations, planters and brick pathways. Size Tolerance Mean & Range : T2 & R1. Compressive Strength : ≥ 55 N/mm2. Water Absortion : ≤ 7%. Configuration : Vertically Perforated. Gross Dry Density : 1660 kg/m3. Durability : F2. Active Soluble Salts : S2.