Custom Corrugated Box Dividers

Measuring for a Correct Fit

Dividers only work if they fit both the product and the carton. Measure the widest point of your bottle or jar, usually the shoulder or base, and the height. Then measure the inside of the carton. We use those figures to set the cell size and strip height, allowing a little clearance so items slide in easily without rattling.

If you already have shipping cartons, send us the internal dimensions and we make dividers to suit. If you are ordering cartons too, we can design both together so the fit is exact.

Mixed products in one box, such as a bottle with two small jars, need a custom grid with different cell sizes. We can draw this up from a sketch or a sample.

Check how the bottle will be lifted out too. If cells are a tight fit, customers can struggle to pull out a bottle with a narrow neck. A finger notch cut into the top of one strip, or a slightly larger cell, makes unpacking easier without allowing movement.

Bottles with labels on the shoulder or neck tags need a little more clearance, so mention any extras that sit outside the glass when you send measurements. A tight cell can scuff a paper label as the bottle slides in. Our guide to measuring for a box explains how to allow for labels and caps.

Board Grades and Strength

Most dividers use single wall corrugated board in E or B flute. E flute is thinner and suits smaller jars and candles. B flute is thicker and better for heavy glass bottles. For very heavy items, double wall board gives extra stiffness.

Kraft brown is the standard colour. White board is available if the dividers will be seen when the box is opened, for example in gift boxes.

Dividers can also be printed, though most are left plain. A small logo or a 'this way up' mark helps when the dividers double as presentation in a gift carton.

Humidity affects corrugated board, so if your cartons sit in a cold warehouse or travel in winter, a slightly heavier grade helps the dividers keep their shape and grip on the bottles.

Who Uses Divider Sets

Wineries and wine merchants, craft breweries and distilleries, candle makers, preserve and chutney producers, cosmetic brands shipping glass jars, olive oil and sauce makers, and subscription box companies sending bottles all use corrugated dividers.

Warehouses also use them for storage, keeping small parts or stock separated on shelves, and removal firms use larger dividers for packing glassware.

Laboratory and pharmacy suppliers use small-cell grids for vials and sample bottles, while hobby retailers use them to keep paint pots, inks and small craft supplies upright and organised in transit. Where the divider must fold up with the carton, the folding carton inserts for one-piece boxes suit better.

Dividers for Gift and Retail Packaging

Not all dividers are hidden in shipping cartons. Gift boxes for wine, gin or candles often use dividers that are seen when the lid opens, so a clean white or printed board makes a difference. A neat grid holding three bottles side by side looks organised and premium.

For retail, dividers can turn a carton into a display. Remove the lid, and a twelve-cell box of jars sits on a shelf ready to sell.

Subscription boxes benefit in a similar way. A monthly box of three craft beers or two candles looks neat and intentional when each item sits in its own cell, rather than rolling about in shredded paper.

Measure the Carton's Inside Before the Bottles

Dividers are cut to the inside of a carton, not the outside, so the first measurement is the internal length, width and height of the box the grid will sit in. Then measure the bottle at its widest point, including any label or foil, and the overall height. The cell size falls between the two: wide enough that a bottle slides in without scuffing the label, tight enough that it cannot rock. If you already have cartons, send a sample and we work from that.

Email the carton and product dimensions, the number of cells and the quantity, and a custom quote comes by email within one working day with low minimums quoted per job. The free proof shows the strip layout and the cell sizes. Dividers are cut in 4 to 7 working days after approval and sent flat on free tracked UK mainland delivery in 2 to 3 working days; any that arrive damaged or wrongly cut are reprinted or refunded if reported within 10 days. We keep the layout on file for reorders, and gift packs that need a single partition rather than a grid use the simpler single box partitions for two items.