ALL BOXED UP. Our plastic boxes, which are available individually or in preconfigured sets, allow you to create a customised ordering system in all LISTA drawers. LISTA plastic boxes are available in different dimensions, allowing small parts such as screws, nuts and more to be stored neatly and arranged according to size.. Plastic Divider Inserts. Insert trays are cavity trays which use another packaging or storage product as part of their structure. An insert tray can be used with a plastic corrugated box, plastic bin, hinged plastic box, or standard corrugated box. view more. Tray Products/Spool Blue Color Aluminium Foil Used for Communication Cable. You would think that adding custom box inserts to your corrugated packaging would actually increase costs when shipping because it adds extra weight to your packaging. But custom inserts actually can help keep costs down by preventing product damage, reducing labor cost to fulfill your packaging, and creating a better customer experience. Plastic Box & Divider. Polyreflex plastic box and divider are made of PP corrugated sheet or PP honeycomb sheet with reinforcing agents, it is designed to be lightweight, durable, reusable and economical, provide a perfect solution for packaging to store, protect and transport valuable, fragile, non-waterproof goods or materials (such as.