Sadhguru: Basically It is just one. Another a single is just an issue of dimensions. We believed that If your households are any where concerning 2000-2500 sq. ft., the Bhairavi Yantra would do. For households larger than that, we said it's not sufficient and we provided the Avighna. Avighna also https://www.youtube.com/@Mahavidyabaglamukhi