Replacement parts:115-8449Compatible with Toro Model:20330 (22in Recycler Lawn Mower),20330C (22in Recycler Lawn Mower),20331 (22in Recycler Lawn Mower),20331C (22in Recycler Lawn Mower),20332 (22in Recycler Lawn Mower),20332C (22in Recycler Lawn Mower),20333 (22in Recycler Lawn Mower),20333C (22in Recycler Lawn Mower)Compatible with Toro Model:20334 (22in Recycler Lawn Mower),20334C (22in Recycler Lawn Mower),20337 (22in Recycler Lawn Mower),20337HD (22in Recycler Lawn Mower),20338 (22in Recycler Lawn Mower),20339 (22in Recycler Lawn Mower with SmartStow),20339C (22in Recycler Lawn Mower with SmartStow),20340 (22in Recycler Lawn Mower with SmartStow)Compatible with Toro Model:20350 (22in Recycler Lawn Mower),20351 (22in Recycler Lawn Mower),20352 (22in Recycler Lawn Mower),20353 (22in Recycler Lawn Mower),20355 (22in Recycler Lawn Mower with SmartStow),20357 (22in Recycler Lawn Mower),20370 (22in Recycler Lawn Mower)Compatible with Toro Model:20371 (22in Recycler Lawn Mower),20372 (22in Recycler Lawn Mower),20373 (22in Recycler Lawn Mower),20374 (22in Recycler Lawn Mower),20376 (22in Recycler Lawn Mower),20377 (22in Recycler Lawn Mower),20378 (22in Recycler Lawn Mower),20379 (22in Recycler Lawn Mower)Mounted to the side of the mower, it acts as a door to keep the grass under the deckPlease note: Consult owner's manual for proper part number identification and proper installation Compatible with Toro Model:20954 (55cm Recycler Lawn Mower),20955 (55cm Recycler Lawn Mower),20956 (55cm Recycler Lawn Mower),20958 (55cm Recycler Lawn Mower),20959 (55cm Recycler SmartStow Lawn Mower),20960 (55cm Recycler Lawn Mower),20961 (55cm Recycler Lawn Mower with SmartStow),20964 (55cm Recycler Lawn Mower),20965 (55cm Recycler Lawn Mower with SmartStow),21329 (22in Recycler Lawn Mower with SmartStow)