"B34zip" most commonly refers to used in jewelry and supply industries for organization and storage . B34P Zip-Lock Bag Guide
Includes a white writable area for easy labeling (often labeled as B34W ). B34zip
If you are referring to technical or construction "Zip" systems, here are the most relevant guides: Installing ZIP System Sheathing: Taping Seams and Corners "B34zip" most commonly refers to used in jewelry
Thicker plastic for sharp or heavier items (often labeled as B34P4 ). small electronic components
Commonly used for organizing jewelry, small electronic components, craft supplies, and hardware. Alternative Interpretations
Lightweight, clear plastic for general storage.
These bags are standard reclosable plastic bags primarily sold by JPB Jewelry Box and similar industrial suppliers. 3 inches by 4 inches. Material Types: