The Dewalt 243547-00 Lawn Mower Flap is a replacement protective component used on compatible lawn mowers to cover the rear discharge opening. It helps direct discharged grass clippings downward and provides a barrier around the mower's rear outlet during operation. The flap supports the mower's intended discharge arrangement while helping reduce direct exposure to the discharge area.... https://www.wholetoolbox.com/dewalt-243547-00-lawn-mower-flap/243547-00.html