The Mellowed Red Sovereign brick, manufactured by Wienerberger, is a waterstruck, solid facing brick that is red in colour with a light texture. It has a work size of 215 x 102.5 x 65mm and comes in a pack of 430 bricks. The individual dry brick weight is 2.3kg. The brick has a size tolerance of T1/R1 and a gross dry density of 1640 kg/m3 (D1). Its compressive strength is ≥21 N/mm². The thermal conductivity is 0.47 W/(m·K) (lambda 10,dry,unit value (EN 1745 tabulated: S1) P=90%). It has a durability designation of F2 and a water absorption of ≤21%. The initial rate of water absorption is between a minimum of 0.6 and a maximum of 2.2 kg/(m²·min). It has an active soluble salts rating of S2. Please read our Bricks Returns Policy before ordering.