15x12 16x20x4 mm 17x14 18x15 20x17

40 mm 50 mm 55 mm

8 9 12

25 mm 28 mm 30 mm 32 mm 35 mm 38 mm 40 mm 42 mm 45 mm 48 48 mm 60 mm

4 cm 5 cm 5-5 cm

DIN 5482 UNI 221-16