Nominal dimension
Opening
Baseboard
Cover plate
Number of nuts
Reference weight
L
B
L1
B1
L2
B2
L3
B3
4535
450
350
480
380
550
620
520
20
52.9
5040
500
400
530
430
600
670
570
22
60.5
6040
630
700
770
24
69.5
6045
73.1