... . Door size:1000X2100 mm 3. Load bearing: 100kg JBM Floor spring door closer1. Trade terms: EXW, FOB, C& F, CIF2. 30 ... ,iron door,aluminium door.7. 1 or 2 closing speed valve is optional and adjustable.8. 500000 times tested without damage ... finishing 300#, 320#, 350#, 430#, 460#Outer size of floor spring(mm)Length 270mmWidth 125mmHeight 50mmTest500, 000 timesHold open85ºPacking Quantity ...