These units are made to Standard RTA specifications and are available in Type J (New Jersey) and Type F. Each come in a variety of configurations and with various options.
Type J details are set out in FIGURES 1 & 2 and Type F details in FIGURE 3.
Figure 1 Type J (New Jersey) safety barriers - double-face unit details
Figure 2 Type J (New Jersey) safety barriers - half-face unit details
Figure 3 Type F safety barriers - details and configuration