3HS20 is smallest InfiniSpring® for maximum loads up to 247 N and with a nominal load range of 15-20 kg. Spring free height is 44 mm and nominal load height is approximately 41.6 mm. Spring is 119 mm wide and 3 mm thick. Spring can be fastened using M5 8.8 bolts. Corrosion protection according to ISO12944 C4-H with 720 h salt spray endurance. Color is silver.