Odd model of Simplex Truealert

Does anyone know anything about a Simplex truealert horn strobe that has the lines in the grille oriented in a slanted fashion instead of the normal horizontal orientation? I saw one a few months ago and I would like to know more about them.

It’s the weatherproof version that came out a couple of years ago. They stopped using Wheelock appliances and began making their own weatherproof devices, chime/strobes, and multitone horn/strobes.

http://www.simplexgrinnellstore.com/pdfs/S4906-0010.pdf

Cool, thanks for that. I wasn’t sure if it was some older model, like the Quickalert or if it was rare or not.