The intermediate pulley is a unique return pulley because it is incorporated entirely within the rail structure. The recessing of rail will therefore become easier. If required, the end cap (6253) can be placed in the same position as the pulley. Because this pulley is so compact, an overlapping carrier bracket will no longer be necessary for systems with a single curtain stack (carrier set 6275-3000). Applicable to systems of up to 6 metres long with a maximum of 2 curves and medium-heavy curtains.