Our retaining systems consist of four different style systems and can be produced in three different sizes, depending on their intended use. The first and most versatile is our commercial vertical design, this system allows for multiple variations and creative structures to be erected on diverse terrain. 

The second system TNA offers is the Commercial Sloped System. This system is primarily used for large straight projects with very steep embankments such as a fractured rock face or can be used in tight corridors where very little batter on the wall can be achieved. 

The third style wall system that TNA offers is the Six Inch Step Back - this product line is based on a vertical designed block which sets itself back as each course is placed higher. The design also allows for easy calculations, as the batter in the wall is set with each new course. The four to one slope is easily created with this product line, and still leaves a level work site, helping with placement and safety on the job. 

 
The fourth style of wall system that is offered by the TNA product line is the Two Foot Step Back. With a one to one slope this product allows for an extreme batter to be created while erecting projects. The products can also be used in conjunction with one another.