"The semi-square profile suits certain architectural applications better than a round profile LED BAR," says the company. "The unique linear end cap design means that there is no change in profile as one Bar Pro Rectilinear is butted up to the next. This is because the bonding surface of the end cap is inside the profile of the Bar Pro Rectilinear and the transition from one section of Bar Pro Rectilinear to the next is perfectly smooth."
(Claire Beeson)