Lamps and optical elements can be changed for different distributions, Hot aiming rotates 365°, tilts 45° and locks in position without tools, Translating center beam optics provides full light output from 0 - 45°, Toroidal transformer provides full light output and very low noise, Plaster lip with direction marks accommodates ceilings 1/2 to 1" thick, Setscrews integral to bar hanger receivers provide positive locking, Bar hangers adjust up to 24" and have integral nail and tee grid clip, Junction box has (3) 1/2" pry-outs & suitable for (4) #12 thru-branch, cULus listed, Non-IC rated, thermally protected and ASTM-E283 airtight