Resilia Plastic, Leak-Proof Shipping Bags for Live Fish - 6" x 16" 002 mil, Double Bottom Seal, for Freshwater & Saltwater Fish, Case of 100 - Walmart.com
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Type 86 Concealed Double Bottom Box Metal Iron Two-position Junction Box 160*75*50mm Thicken - AliExpress
Wooden Coin Box With Double Bottom and 2 Trays in Italian - Etsy
Amazon.com : Archival Methods Double Bottom Record Box, 15.5x12.75x10", Gray, Package of 5 : Photo Storage Boxes : Electronics