Plymor 4″ x 6″, 4 Mil Heavy Duty Zipper Reclosable Plastic Bags
Plymor 4″ x 6″ (Case of 1,000), 4 Mil Heavy Duty Zipper Reclosable Plastic Bags. Are the bags food safe?. What is Mil?. “Mil” is the plastic thickness. 4 Mil =. 004″, thicker than a standard freezer bag and excellent for heavy duty applications.