Cleanout Grates- A cleanout grate is a little screen placed at the bottom from the downspout. It helps prevent leaves and various debris from clogging the downspout. Most wheel torque is probably going on regular slightly larger to the catless downpipe, but the real difference is small enough that this https://catlessvscatteddownpipe21086.robhasawiki.com/10662105/downpipes_secrets