Designed for Hauling Curtains not Lifting. Fitted as Part of a Continuous Loop Hauling Line. To be Wall Mounted. Designed for hauling curtains- not for lifting. These are fitted as part of the continuous loop hauling line on the Doughty Six track curtain track. Incorporates a hauling line tensioning system. (Supplied with steel cover.). doughty fixing-doughty trussing-doughty curtain drive