The Delta Muslin Mover System comes in several different sizes. It is a ceiling mounted system. Ever visit someone in the hospital? Have you seen those ceiling curtains that get drawn every time they do something private to a patient? That's the system.
The Muslin Mover attaches to regular, or drop ceilings, or to walls, with optional L Brackets. Backgrounds are attached to smooth traveling carriers that are dual-wheeled, and made of nylon. It compresses 10' backgrounds to as little as 18", depending on the thickness of the material you decide to use.
This system does not come with muslin, or any other background. You provide that. What is DOES come with: straight and curved track sections, one carrier, and one clip for every foot of track ordered. The Muslin Mover comes in Single, Two, Three Wall Systems, complete with curved and straight track sections. They are also available in a complete Oval System.