4 Pcs 16”x18” Expanding Foam Packaging for PC & Fragile Items, Expandable Packing Foam, Protective Cushioning for Electronics & Valuables

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• PACKING SOLUTION: Umail’s expanding foam packaging are use on an industrial scale for packaging odd shaped products, or oddly shaped items, meters, vases, sculpture, crafts, and even a fully built PC with GPU installed, pc packing foam, pc shipping foam
• WORK QUICKLY: As you crack “L” symbol it immediately comes in contact with the reactant in “R” symbol. You have few seconds to thoroughly combine the two before the final product bursts through a membrane and fills the envelope, be prepare to use quickly
• EASY TO USE: Place foam bag on desk, crack “L”, you will hear “peng” sound, then slap “L” and “R” with both hands quickly. Pat 20-25 times within 8 seconds. Wait for liquid expand and break through L/R area, quickly distribute liquid evenly throughout bag. Note: Only simple spreading to all corners of the bag is required here (e.g., follow the video instructions). If you keep spreading during the foaming process, it will disrupt the progression, causing an unsmooth foaming reaction and insufficient expansion
• WHAT YOU WILL GET: 4 pcs individually packaged expanding foam packaging bags. We recommend used for box size of 10"x10"x10". Please note that the heat generated when slapping the pc shipping foam bag is normal and it will soon return to room temperature
• WATCH TUTORIAL: If first time user, watching tutorial or instructional video to get a better understanding of how foam expands and how to apply it properly. This will help ensure a good results and prevent expandable foam from expanding more than intended
• SHIPPING PC: According to experience, when using expanding foam for pc shipping, please place it in case as soon as bag starts to expand. It will automatically adapt to the shape of computer, providing protection, not wait until bag expanded significantly