All floor springs have passed 300,000 times opening and closing tests,meeting safe application standards. KT78 floor springsLoading weight: 105-130KGS90 Hold and Non-Hold functiondoor size:1100mm*2200mmused for all metal ,steel or plastic doorsdoor openning angel at 116 degree at your optionbase size: 298*140*57mmCan also offer Dorma type KT78 floor spring
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