There’s a similar yoga technique called 4-7-8 breathing. Breath in for 4, hold for 7, exhale for 8
There's a nice dynamic with this technique where you end up using more of the oxygen in your breath, since you inhale for less time (4 seconds) than you hold & exhale (7+8 seconds).
With box breathing, on the other hand, I find it really unpleasant to hold the empty lung position, and also four seconds feels like it's really not enough to use my full breath.
For people interested in the Original sources, i highly recommend starting with; Roots of Yoga by James Mallinson and Mark Singleton to know the primary sources and then actually reading them.
Edit: found it:
Watch "How To Perform the 4-7-8 Breathing Exercise | Andrew Weil, M.D." on YouTube