That's an excellent and very practical question! It gets to the heart of a common frustration in public space management. The short answer is: it depends entirely on the specific trash can model and the local municipality's standards.
There is no universal "standard size" for all urban trash cans. Cities and manufacturers use a variety of designs—round, square, rectangular, with different capacities (like 20, 35, or 55 gallons). However, many modern public bins are designed to use standard-sized, commercially available plastic liners to simplify operations and reduce costs. Common sizes you might find are 30-gallon or 33-gallon bags.
That said, some specialty or designer bins—often found in parks, downtown districts, or specific facilities—do require custom-sized liners. These are made to fit perfectly into unique shapes and secure properly under the lid.
So, what should you do?
1. Check with Your Supplier or City: The best first step is to contact whoever supplied or manages the trash cans. They can provide the exact liner specifications or a recommended part number.
2. Measure Your Bins: If that's not possible, measure the interior dimensions (height, width, depth, or circumference) and the capacity. This will help you match to standard liner sizes.
3. Consider Universal Fit: Many suppliers offer "universal fit" or drawstring liners in large sizes that can be gathered and tied to fit various containers.
In summary, while many bins use standard liners, you cannot assume it. Always verify the requirements for your specific units to ensure a proper fit, avoid leaks, and maintain a clean urban environment.