Designed to meet EN1154 500,000 cycles tested Staked valves allow precise speed adjustment and avoid valve backout High quality steel spring sealed in hydraulic fluid for superior performance Graded aluminium body with triple protection paint to avoid corrosion Noise free operation Product Specification: Size EN2 to EN4 (Template adjustable) Maximum door size 1000mm, 60kg Closing speed angle 180 ~ 15 degree Latching Speed angle 15 ~ 0 degree Maximum opening angle 180 degree Arm Type – Regular, Parallel & Hold open