Sadhguru: Basically It is just one. The other a single is just a question of dimension. We approximated that If your residences are any where concerning 2000-2500 sq. ft., the Bhairavi Yantra would do. For homes larger than that, we said it's not enough and we available the Avighna. Avighna https://www.youtube.com/@Mahavidyabaglamukhi