Sadhguru: In Essence it is only one. Another 1 is just a matter of dimensions. We approximated that If your properties are any where in between 2000-2500 sq. ft., the Bhairavi Yantra would do. For households bigger than that, we reported this isn't enough and we made available the Avighna. https://www.youtube.com/@Mahavidyabaglamukhi