The water tank lids is important because the dirt and the mosquito can go inside if not installed properly. Moreover, the water-born disease and mosquitos put make you and you’re surrounding ill.  In addition, it can fly by heavy wind and can get bend if anything falls on it. In other words, it is not good to leave the water tank cover and lid as it is. As the disease spread because of it. 

Features - 

•  Made in India applicable to all size water storage tank
•  Just put and press then it cover tighten at your storage tank
•  No leakage and safe hygienic product