From the submitter:
"My office just installed a new safety light in the stairwell."
Hey, it's cool! You can sorta see up at the top. "Sorta" is good enough when OSHA is concerned, right?
More than ten, apparently.
No. Is horizontal lamp. Next question.
(For whatever reason I could only picture this as an exchange between Homer and the Khlav Kalash guy. Don't ask.)