Socket spanner lock / Fixing B13
Fixing B13.1
with square box spanner 7 including facing brackets. Version B13.1 can be operated from above and from below. (illustration: closed from above)
Fixing B13.2
with square box spanner 8 including facing bracket (also for heavy-duty gratings). This version is available in galvanized steel and stainless steel.
Fixing B13.3
with square box spanner 8 can be bolted on to grating in subsequent installation. Suitable for gratings with a mesh spacing of 33,33 mm and grating height of 25, 30 and 40 mm.