Rise Catch Basin with Downspout Grate:12 x 12 inch insert catch basin capture leave and other debris from roof to downspout,while capturing water into your catch basin or low profile adapter Excellent design:Our catch basin capture more water than flat drain grates; sloped surface allow debris to slide off the surface; reduce downspout splash and protect property wall Various Pipe Sizes Connection: Areas for (2, 3, 4 and 6) inch pipe connections.4 pipes outlet allow to DIY your own patio pipes to create a complete drain system. Easy Installation and Clean: Very easy for you to do it by yourself.Debris Basket and Grating makes it clean easy. Wide Rim: The rim is widened, compared with other products on market, not easy to be broken, strength is much more stronger.All exits are allowed to be knocked down, choose your favorite size. This storm drain is a perfect solution for collecting excess water from the lawn, landscape and driveway. And perfect for removing sediment and debris from your water drainage. The knockouts design is very convenient for your pipe connections. The debris basket is very help for you to collect the debris in drainage.