Floor Spring Features : High Quality Casting iron floor spring body. High Quality Coating for the body, stainless steel cover. Floor spring comply to EN 1154. Fire-rated tested. CE approved for D-948 Double action opening. Hold open at 90o Applicable for glass door 8-12mm, wooden, iron door, aluminium door. 500000 times tested without damage. Germany machine oil and sealed rings, Keep perfect working in cold temperature. 2 Closing Speed adjustable Double Cylinder Specification : Available in 80 kg, 120 kg, 150 kg Max. Door Width 1250 mm Max. Open Angle 1160 Hold Open Angle 90o