1. Pick the size for your trash can.
Most can liner sizes are designated by two numbers—width and length (example 33 x 40).
Measuring for the correct liner size:
- Bag Width = ½ the outer circumference of the container.
- Bag Height = the height of the container + ½ the diameter or diagonal of the bottom of the container + 3” for overhang.
If your liner has three measurements, the third is for the gusset.
2. Pick the correct gauge.
The two main types of plastic used to make can liners are Linear Low Density (Low-D or LLD or LLDPE) and High Density (Hi-D or HDPE).
- Low-D liners are measured in mils and provide excellent strength, puncture and tear resistance. These liners are used when you expect to dispose of rough or sharp objects, but these bags have a lower load capacity than Hi-D bags.
- Hi-D liners are measured in microns and provide a higher load capacity and are puncture resistant, but are more prone to tear. These liners are generally used for paper and non-rough objects under normal transport conditions.
GAUGE CONVERSION CHART
3. Know the capacity of your liner.
Capacity is measured in gallons for trash can liners. It is important to note that ‘Capacity’ does not refer to how much weight a bag can handle. That depends on the quality of plastic, the type of seal and the gauge.
