From B4L Blocks
Standard Aerated Concrete Block 7.3N is available in 100mm x 440mm x 215mm. This block is extremely versatile and can be used in a number of situations. This block is part of the High Strength grade (recently renamed from Hi-7) and is used principally where higher compressive strengths are required such as in the foundations and lower storeys of three storey buildings, piers under high vertical loads and in multi-storey buildings, can be used for cavity and partition walls, and a variety of other applications. Benefits: Extremely versatile Class A1 Fire Water resistant Frost resistant Up to three storeys