22173133 ZX SPM T G L2980 Mounting rail made of curved hot-dip galvanised sheet steel, suitable for AMPHIBIA damp-proof diffuser luminaires. For use in corrosive atmospheres, treat the cut edges and openings with zinc spray. Dimensions: 2980 mm x 55 mm x 44 mm. Weight:  2.8 kg. Not suitable for ZX/ZX2 luminaires!