If the IBC storage tank is placed outdoors without protection, ultraviolet rays will damage the IBC storage tank and its contents Our black UV cover is used for the rainwater tank 1000 liter IBC, which can protect your water tank from harmful UV rays IBC adapter is made of 210d fabric. The protective cover is also durable and rainproof. With the help of the notch, the so-called lid flap, even the covered IBC water tank can be used completely without remove the film. Suitable for 1000L tank (approx. 116 x 100 x 120cm / 45.67 x 39.37 x47.24in) Note: The data are all measurements manual, please allow 1-3cm error; due to the difference in light and display, there would be a certain color difference, please refer to the actual object received.