What are five-panel folder (FPF) corrugated cartons used for long, flat products?

A Five-Panel Folder (FPF) is a specialty corrugated box style designed specifically for packing long, narrow, and shallow items that cannot be loaded easily into standard top-opening boxes.

### Structure & Assembly:

• Consists of a single flat piece of corrugated board with 5 creased body panels and end-closing flaps.


• The item is laid flat on the center panel, and the 4 remaining panels wrap snugly around the product like a roll.


• The fifth panel overlaps the first panel and is glued or taped shut.

### Why FPF Prevents Damage:


• Eliminates empty void space on long items, preventing bending during courier handling.


• Multi-layered folded ends provide impact cushioning to vulnerable corners.

### Best for:


• Picture frames, mirrors, and canvases


• Long rods, window blinds, and extruded aluminum profiles


• Books, sports equipment (skis, golf clubs), and furniture components.