The max door width:850mm The max door weight:45kg The max open angle:180 degree Adjust the speed of closing and locking Installation:Standard installation, door frame installation, parallel installation No right and left door Surface color:Sliver gray/bronze/brown/golden/white/black Passing the test of National Fir Detection products:Design according to the standard of America UL, European CE Useful time:Above 500,000 times