Diocletian Window Extra Quality -

If you have a specific building or usage in mind (e.g., “Should I put a Diocletian window in my living room?”), I can refine the review to practical advice.

A (also known as a thermal window ) is a large, semicircular window that is typically divided into three lights (sections) by two vertical mullions. It is named after the Roman Emperor Diocletian (r. 284–305 AD), as it was a prominent feature of the baths he built in Rome, though similar forms existed earlier. diocletian window