The class 4 treatment allows the stake to be in contact with the ground, which class 3 does not. The treatment in class 4 is much more expensive that class 3 however the resistance is not comparable…
Our items are packaged with slats between each row: this space that is created allows an even distribution of the impregnation and guarantees a significantly greater product lifespan.
The wooden posts are recommended for the assembly of wooden fences. Thanks to their class 4 treatment, the wooden autoclave posts are resistant to external attack (insects, fungi, bad weather) and can be placed in direct contact with the ground.