It can also be installed on concrete structures

Tochigi Prefecture Emergency Local Road Maintenance Work (General Prefectural Road Chugushi Ashio Line)
* Embankment height (m): 3.0 * Approximate construction extension (m): 17
* Rockfall diameter (m): D = 1.1 * Converted fall height (m): H = 23.0
* Rockfall energy (kJ): E = 371