American Lawn Mower Company GC91820 18-Inch/20-Inch Reel Lawn Mower Grass Catcher, Black

What It Is

The American Lawn Mower Company GC91820 is a rear-mounted grass catcher designed for 18-inch and 20-inch reel (push) lawn mowers. It collects clippings as you mow, making it ideal for small to medium lawns where bagging is preferred over mulching or leaving clippings.

Fitment & Compatibility

Check these before buying:

• Deck size: Fits only 18-inch or 20-inch reel mowers. Measure your mower’s cutting width – it will not work on 14-inch, 16-inch, or 21+ inch decks.
• Model/brand fit: Designed for American Lawn Mower Company reel mowers (e.g., 1204-14, 1204-16, 1204-20, 50518, 50520). Not compatible with most gas, electric, or rotary mowers. For other brands (Great States, Yard Force), verify mounting bracket dimensions.
• OEM vs aftermarket: This is an OEM part, so it matches factory specifications. No adapters or modifications needed for compatible models.
• Measurements: The catcher bag is roughly 18 x 12 x 10 inches. Ensure your mower’s rear discharge chute opening is at least 4 inches wide and the mounting holes align (typically 3.5 inches center-to-center).

Key Things to Know

• Quality: The bag is made of durable polyester mesh, but the plastic mounting bracket can crack if over-tightened. Handle screws gently.
• Installation difficulty: Simple – attach bracket to mower frame with two bolts, then clip the bag onto the bracket. No tools required for bag attachment. Expect 5-10 minutes.
• Common gotchas: The bag fills quickly (especially in tall, damp grass). It can drag on the ground if the mower’s rear wheels are small. Check that the bag doesn’t rub against the reel or wheels during operation. Also, the bag may not stay securely clipped if the bracket is slightly bent – inspect before buying used.
• Performance: Works well for dry, short grass. Wet or long grass clogs the bag and reduces airflow, causing clippings to spill out.

Should You Buy It

Buy this if you own a compatible 18-inch or 20-inch American Lawn Mower reel mower and want a simple, OEM-matching grass catcher for light-duty bagging. Skip it if you mow wet grass, have a different brand reel mower without verified fit, or need a larger capacity bag – you’ll be frustrated by frequent emptying and potential fit issues.