Perforated building bricks are provided for building load bearing walls, partition walls and other constructions. Not reccomended for use under direct atmospheric exposure without finishing coating.

- Compressive strength: 25 N/mm² (MPa)

- Freeze/thaw resistance 50 cycles, Category of exposure - Class F1

- Gross dry density: 1005 kg/m³

- Reaction to fire: Class A1.

- Water absorption: ≤25%