73mm Ibstock Red Class B Perforated Eng Brick
The Red Engineering Class B brick made by Ibstock, is a perforated brick that combines both high strength and low water absorption. Engineering bricks are specified for their physical characteristics and not their appearance. They have high compressive strength and low water absorption and are classified only by these properties. Their use for facing work should be avoided. Where aesthetic performance is a major consideration, facing bricks should be used.