This drainage channel is part of the Storm Drain(TM) system from Reln. This product is easy to install and allows for maximum flexibility according to your needs around the house or light commercial uses. You can connect storm drain to mole-pipe or 4" storm water pipes with bottom or end outlet, inline collection pit. The leaf guard prevents leaves or other debris from clogging pipes or waterways. Preformed 4-in. outlets allow easy multiple connection of mole-pipe female adaptor or 4-in. PVC pipe using specialized glue. This product is backed by a 1-year limited warranty.