115-4664 Grass Bag Compatible with Toro 22" Lawn Mower 20330 20331 20331C 20339, Grass Catcher Assembly for to ro Model 20350 20351 20361 20370 20371 20377, No Frame

What It Is

The 115-4664 is a replacement grass catcher bag (bag only, no frame) for select Toro 22-inch walk-behind mowers. It collects clippings during cutting and is designed for models with a rear bagging attachment that uses a separate frame assembly.

Fitment & Compatibility

Before buying, check these three things:

1. Model number – This bag fits Toro models ending in 330, 331, 331C, 339, 350, 351, 361, 370, 371, and 377. Common examples: 20330, 20331, 20331C, 20339, 20350, 20351, 20361, 20370, 20371, 20377. Verify your mower’s model number from the plate under the rear flap or near the engine.

2. No frame included – This is the bag only. You must already own the metal or plastic frame that holds it open and attaches to the mower. If your frame is missing or broken, this bag alone won’t work.

3. Deck size – Confirmed for 22-inch cutting decks. Measure your deck width if unsure; 21-inch or 20-inch decks use a different bag.

Key Things to Know

• Material – Heavy-duty woven polypropylene. Holds up well to normal use but can tear if overfilled or snagged on sharp metal edges on the frame.
• Installation – Slips onto the existing frame and secures with a hook-and-loop strap or drawstring (depending on frame style). Takes 2–3 minutes. No tools needed.
• Capacity – Holds roughly 1.5–2 bushels (about 40–50 lbs of wet clippings). Overfilling clogs the chute and strains the bag seams.
• Common gotcha – The bag opening must align precisely with the mower’s discharge chute. If your frame is bent or missing a support rod, the bag won’t seat correctly and will spill clippings.

Should You Buy It

If your Toro 22-inch mower’s original bag is torn or worn out and you still have a good frame, this is a direct, affordable replacement. Skip it if you need a full catcher assembly (frame + bag) or if your mower model isn’t on the compatibility list.