Void fill packaging is material placed around a product to occupy empty space inside a shipping box, mailer, or carton. Packaging void fill can hold an item in place, soften contact with the box, or stop parts from colliding. Paper, crinkle material, and inserts do different jobs. Choose the material after you know what moves, where it moves, and what the packout must look like when it arrives.
A stock box often leaves air around a product because its length, width, or height was chosen for several items. Filler takes up that space after the box is already selected. It also adds a packing step. That is the practical reason buyers compare void fill with a box built around the product.
Can a custom box eliminate void fill?
A custom-dimension box can reduce or remove supplemental filler when the product dimensions and packout stay consistent. The box starts with the product footprint, height, closure, and required clearance. The product still needs room to load and unload. A box that is too tight can crush corners or fight the closure.
An insert is another route. An insert is a shaped interior piece that holds the product away from the outer walls or separates several pieces. If the insert is cut too loose, the product rattles. If it is cut too close, loading slows or the product catches. Test the filled package, not an empty sample.
| Packaging approach | What it controls | When to consider it |
|---|---|---|
| Stock box plus paper filler | Open space after the box is selected | Several products share one carton |
| Custom-dimension box | Open volume through closer sizing | Product dimensions stay consistent |
| Box with an insert | Product position and separation | Movement needs more control |
| Product-specific box | Fit, closure, and repeatable loading | One product needs a defined packout |
Which products benefit from a closer package fit?
Product-specific boxes give the product a defined starting footprint. Wine box packaging has a bottle-focused packout to plan around. Wax packaging and towel packaging show why an item's shape and surface change the structure discussion. Shoe box packaging gives another fixed footprint. These product pages are starting points, not proof that every order needs the same insert or filler.
Several product sizes can change the answer. A small set of box sizes may pack better than one oversized stock box. List each product size before the dieline is drawn.
How should you compare void fill with a custom box?
Compare the complete packout. Count the steps to load the item, check whether it shifts when the closed box is handled, and look at the inside after the box is opened. Also check whether the chosen box needs an insert, paper, or another stabilizer. Loose filler is not the only variable.
Run the same check with the stock box and the custom-dimension box. Use the product in its normal packed state. A digital proof checks artwork and structure before printing, but it does not replace a fit check with the actual product.
What should I send before the dieline is drawn?
A dieline is the flat cutting template for a package. Send the product length, width, and height, packed quantity, closure preference, shipping context, and presentation requirements. Tell us if an insert will hold one item or several. A product photo or physical sample can clarify shape, but the actual item still needs to be checked in the finished packout.
We draw the dieline with free design support, then send a digital proof before anything prints. The MOQ is 100 units. Pricing is from $0.49 per unit at volume, quoted to spec. Production is typically 8 to 10 business days after proof approval, plus delivery. Free US shipping is available.
The custom packaging design page is the place to start. Order the $19.99 sample kit to compare board and fit before approval. The sample kit is credited toward the first order.
Frequently Asked Questions
What is packaging void fill?
Packaging void fill is material placed around a product to occupy empty space inside a box, mailer, or carton. It can limit movement, cushion contact, or separate pieces. Paper, crinkle material, and inserts perform different jobs. The right amount depends on the product shape, box dimensions, closure, and handling path.
Why do boxes need void fill?
Boxes need void fill when open space lets a product shift, collide with another item, or contact the outer walls during handling. Paper and inserts address that space in different ways. A custom-dimension box can reduce the amount needed, but the filled package still needs a fit check with the actual product.
Can a box made to size remove filler?
A box made to the product's dimensions can remove supplemental filler from some packouts when the product size and loading method stay consistent. The box still needs clearance for loading, a workable closure, and enough structure for handling. Test the closed package with the actual item before removing the filler step.
What measurements help reduce empty space?
Product length, width, height, packed quantity, closure preference, shipping context, and presentation requirements help reduce empty space. Provide each product size when several items share a package. A product photo or physical sample can clarify shape, but the final fit must be checked with the actual product.
What are Custom Packaging Lane's order terms?
Custom Packaging Lane has a 100-unit MOQ. Pricing is from $0.49 per unit at volume, quoted to spec. Production is typically 8 to 10 business days after proof approval, plus delivery. Free US shipping and free design support are available. The $19.99 sample kit is credited toward the first order.

















