... test 500,000 cycles,suitable for timber or metal door Description1.Concealed door closer,passed EN1154 test 500,000 cycles.2.material ... ,stop at 0°-120°,hold open adjustable. Advantage 1.Modern style, Exquisite quality & Competitive price2.Variety models and items3.Professional ... we can set up business relation in the future. Concealed door closer,passed EN1154 test 500,000 cycles,suitable for timber ...