Semi-Cutoff Luminaires by
American Electric(also known as ITT and Thomas and Betts)
A partial historical progression
Model name unknown. Sea-Tac Airport, WA
Model name unknown. Ruston, WA
Bottom view of a 400w Merc Model 25 in
Ruston, WA
A 250w HPS Model 13
with power door. (Located in Schaumburg, IL)
A 1000w HPS Model 327 on Mannheim Rd. in
Franklin Park, IL
A 6' arm light in Blacksburg, VA