Sadhguru: Primarily It is just one. One other just one is just a question of dimensions. We approximated that When the homes are any where involving 2000-2500 sq. ft., the Bhairavi Yantra would do. For houses larger than that, we reported this isn't sufficient and we available the Avighna. Avighna https://www.youtube.com/@Mahavidyabaglamukhi