... of Origin: China (Mainland) Model Number:LSJD2500WL single or double track Remote Control Electric Curtain System, Motorized Drape, Motorized Drapery ... : (Standard Length as follows)Products information:- Motorized curtain track system for contract as well as residential use.- Excellent ... 220V/50Hz,230V/50HZ ,240V/50,HZ or 120V/50Hz Including- Track length:All the lenght could be customerized, pls ...