This is a COMMON sight in schools!

For those of us who went to elementary/primary and high/secondary school in the 1990s and 2000s, the high bays you knew are probably the first generation of metal halide high bay fixtures. Those of that era had protective wire guards. If you visit public schools throughout Québec, you'll see that most of them have them.

In my former primary school, high bays look exactly like the one pictured, without the central removable part. I never knew why they would leave the high bays open, thus non-compliant. But this setup would let shuttlecocks get into the reflector, but often would get stuck between two rings of the guard! It's exactly what you see on the pic, plus a paper ball XD

I remember when we would run out of shuttlecocks at school... because they were all stuck in the high bays XP