3000ea - 4 X 5 1.4 Mil Auto Fill Bags - Upgrade your product packaging with pre-opened polyethylene bags. These bags feature a tubular construction with an opening in the front for efficient product loading and durable bottom seal for extra strength. For an easy separation and tear off experience, each bag is precisely perforated along the back. Pre-opened bags on a roll are great for general use, automatic or fast hand product loading. 1.4 Mil Polyethylene Pre-Opened Auto Fill Bags are sold neatly wound on a single roll. Dimensions listed refer to the single bag.