Replaces Part Number: 120-6241 Product size: Upper bottom: 19-7/8 inch, Lower bottom: 21-1/4 inch (Manual measurement may have slight deviation) Compatible with Toro Model: 20199 (TimeMaster 30in Lawn Mower), 20200 (TimeMaster 30in Lawn Mower), 20975 (TimeMaster 76cm Lawn Mower), 21199HD Timemaster 30in Lawn Mower (Home Depot Rental) Compatible with Toro Model: 20976 (TimeMaster 76cm Lawn Mower), 20977 (TimeMaster 76cm Lawn Mower), 20978 (TimeMaster 76cm Lawn Mower), 21810 Timemaster 76cm Lawn Mower 21811 Timemaster 76cm Lawn Mower Compatible with Toro Model: 21199 (TimeMaster 30in Lawn Mower), 21200 (TimeMaster 30in Lawn Mower), 23511 (18in Turf Seeder), 23513 (18in Dethatcher), 33511 (18in Turf Seeder), 33513 (18in Dethatcher) The trail shield is secured to the lawn mower's deck to keep the grass out, It can be used to replace your broken or lost trail shield The trailing shield is designed for when the mower moving forward only, Pushing the mower backwards when the trailing shield is installed will likely get damaged or broken by the blades inside, To maintain it service life, it is recommended to push the mower only forwards when the shield is installed on These parts came plastic expansion anchors (see pix), Need to remove them from part and lightly hold them with wide jaw pliers and install factory screw until seated, Install new guard in on mower and tap anchor/screw assembly into place and you are done