Bag Specification: 20pcs 16"x20" Clear thick 4 mil zipper bags. The zip bags are thickened to 4 mil (one-side), heavy-duty and durable. While most of the bags of market are 2 mils commonly. EscapeLauter › Reclosable & Zipper Bags › 16" x 20" Thick 4 Mil Large Plastic Bags Clear Resealable Zip Seal Lock.
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