The Hi-strength Thermalite Trench Blocks 7.3N 300mm are robust and durable building materials, perfect for below-ground constructions such as foundations and beam and block flooring. These blocks are manufactured from aerated concrete, offering excellent thermal performance and lighter weight compared to traditional materials. They are resistant to frost and sulphate attacks, enhancing their longevity and reliability. With the strength rating of 7.3N per mm², these blocks provide the ideal combination of high performance and practicality.

Brand Name	Forterra
Material	Autoclaved aerated concrete (AAC)
Protects From	frost and sulphate attacks
Type	Concrete blocks
Length	440mm
Width	300mm
Height	215mm
Weight	14.5kg
Texture	Textured
Density	Approx. 600 kg/m^3
Compressive Strength	7.3N/mm2
Thermal Conductivity	Approx. 0.15 W/mK