20-30 Gallon High Density Natural Trash Bags 30" x 37" are strong and handle higher load capacities than Linear Low Density (LLDPE) trash bags at generally half the cost. Use wherever the trash bag will not be subjected to sharp, pointy or rough edges that may puncture the bag. This high density 10 micron 20-30 Gallon garbage bags are ideal for use in office wastebaskets, kitchens, lunchrooms, restrooms and as lawn and leaf collection bags.