The method includes {HEAD ~ the steps} of attaching {TAIL ~ a guide mounting plate} to one of the grid mounting plate and the first support bar, and thereafter mounting a magnetic guide member to the guide mounting plate for vertical movement relative to the support surface 
The method includes { HEAD ~ the steps } of attaching { TAIL ~ a guide mounting plate } to one of the grid mounting plate and the first support bar , and thereafter mounting a magnetic guide member to the guide mounting plate for vertical movement relative to the support surface
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH