1.Simple installment,the soft closing damper only use one crew and one buckle,no need to use othet measure tools
2.The upper fixer can adjust up and down by one key to match upper wheel height requirment;
3.Self-regulation design of upper wheel can make sure the best height of the door,simple installment;
4.Suitable for off-centre mullion;
5.Fit for 38mm-40mm up track; 6.Roller and damper can be customized to add client's brand LOGO when reach to MOQ requirements,still the packing can be customized too.