Ratnatraya Shree Vastu Maha Yantra is made from metal in glass frame. Vastu Yantra is designed to use as a remedy against bad vastu effects which happens due to without knowing the proper direction of vastu. As per Vastu Shashtra, vastu yantra is believed to solve vastu faults and protects home from bad energies, evil effects, black magical influences and negative energies. It can be placed in pooja room or south east corner of home, shop, office etc.