{HEAD ~ The guide rail} is provided at {TAIL ~ one block} for arresting the sliding movement of the door and a detachable cover for concealing the rollers and the upper edge of the door from view 
is provided at
{ HEAD ~ The guide rail } is provided at { TAIL ~ one block } for arresting the sliding movement of the door and a detachable cover for concealing the rollers and the upper edge of the door from view
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH