TOP QUALITY CEILING TRACK Set –Freely expandable from 33.6 inches to 62.4 inches,sized for a variety of window/room sizes,which also saves the trouble of measurement and is more convenient. Silent curtain track –Adopt Nano Silent Roller and #304 Stainless steel hook,no noise,all rollers are easy free sliding within the track. EASY TO INSTALL –Come with all accessories needed to install, guide you to install within minutes. Multi-Purpose: Can be used as ceiling track for curtains, room divider curtains rod, RV curtains track, shower curtains track and so on. NOTE - Room divider curtains are sold separately.