Nice find, the Powerlite R7s are quite rare in my area since I think they were mainly used for spot replacements. They are more common in the next town over, Mississauga though.

I wonder if these replaced some older lumes...the poles seem like they're a older design.

Wow these look almost like OV-15 tudors from a distance.

Thanks Joseph,these must have replaced some other fixtures,the majority of the fixtures in this parking lot are R7's and if I remember correctly there where GE M-250R2 and some R47 also mixed in.