Divya Mantra Feng Shui Vastu Concave Bagua/Pa Kua Mirror Others Multicolor Made from fine quality fiberboard. Peel off the blue coating before use. It consists a mirror which is surrounded by eight trigrams. A concave mirror is used to absorb and nullify passively negative energy. Place the concave Ba Gua Mirror above your door / window facing out. Do not place indoors. Product colour may slightly vary due to photographic lighting sources or your monitor settings.