DIN rails for UNIBOX boxes

Data sheet Measure Length Code
UNI B9 60 mm 521009
UNI B11 95 mm 521011
UNI B12 125 mm 521012
UNI B14 170 mm 521014
UNI B19 230 mm 521019
UNI B20 290 mm 521020
UNI B21 380 mm 521021