[Fits Size]: The upper size of the product is 3 "* 4", and the lower size is 2 "* 3", fit rectangular downspouts. Please make sure the size of the downspout before purchasing for a better experience. [Easy to Install]: The rain water catching system is made of heavy-duty material and can be painted, please read the instruction manual or web page illustration carefully when installing. [Multi Purpose]: By installing our rainwater collection system, a large amount of rainwater will be transferred to the collection bucket(not included) through the downpipe for reuse. [Eco-Friendly]: Rainwater harvesting system saves on water bills and helps conserve water. Such as watering flowers, vegetables, car washing, floor cleaning, etc.