


Custom Snap Lock Bottom Boxes
Custom snap lock bottom boxes have a base made of four interlocking flaps that fold together into a firm floor, so heavier products sit securely without tape or glue. They suit jars, bottles, candles and boxed goods that would push through a simple tuck flap.
- Design proofFree, approved by you before printing
- PriceCustom quote by email within one working day
- Production4–7 working days after proof approval
- DeliveryFree and tracked, UK mainland, 2–3 working days
- Misprints or damageReported within 10 days, reprinted or refunded
How a Snap Lock Base Works
The bottom of a snap lock box has four flaps cut with matching tabs and slots. To assemble it, you fold the two side flaps in, then the front and back flaps, pressing them together until the tabs lock. The result is a flat, overlapping base that spreads the weight of the product across all four flaps, rather than relying on one tuck flap held by friction.
Because it is sometimes called a 1-2-3 bottom, after the sequence in which the flaps fold, you may see that name on packaging specifications. The top usually closes with a standard tuck flap, so customers open the box from above as they would any carton.
Once you have folded a few, the process becomes quick. Many small businesses set up a batch of boxes before a packing session, folding the bases while the products are being labelled, so the actual packing is just a matter of dropping each item in and closing the top. A short demonstration video for new staff saves a lot of confusion on the first day.
Snap Lock Bottom Boxes Compared With Other Bases
A tuck end base is the simplest and quickest to fold, but it can open under the weight of a heavy product, particularly if the box is lifted from the top. An auto lock bottom, sometimes called a crash lock, is pre-glued so the base springs into place as the box is opened, which is the fastest option on a busy packing line but costs a little more to produce because of the gluing step.
The snap lock sits between the two. It holds weight much better than a tuck end and costs less than an auto lock, because there is no glue on the base. The trade-off is that it takes a few seconds longer to fold by hand. For small to medium runs packed by hand, that is often the best balance.
If you are moving from a tuck end box to a snap lock box for the same product, the outside size usually stays almost the same, so your shelf layouts and shipping cartons still work. Only the base dieline changes, which makes the switch straightforward for an existing range.
- Tuck end base: fastest to fold, suits light products
- Snap lock base: holds heavier products without glue
- Auto lock base: pre-glued, fastest for high volume packing
- Snap lock top options: tuck flap, dust flaps or a hang tab

Often ordered by
- Candle makers
- Jam, honey and preserve producers
- Skincare brands with glass jars
- Spirits and oil producers
- Hardware brands
- Coffee roasters
Popular Snap Lock Bottom Boxes Sizes
Sizes are in mm. Every order is cut to your size, so any size between these rows is fine.
| Size | Often used for |
|---|---|
| Jam jar box 75 x 75 x 95 mm | Standard jar of jam, honey or skincare |
| Candle box 90 x 90 x 100 mm | Candle in glass or tin |
| Bottle box 80 x 80 x 250 mm | Oil, sauce or spirits bottle |
| Hardware box 120 x 80 x 60 mm | Hinges, fixings or small hardware |
| Coffee bag box 130 x 80 x 200 mm | 250 g bag of coffee |

Not sure of the size? Send the product measurements and we work out the rest.
Styles
- Snap lock base with tuck top
- Snap lock base with hang tab
- Snap lock window box
- Snap lock box with insert
Materials
- White folding board 350 to 450 gsm
- Kraft folding board
- E-flute corrugated board
- Food-contact grade board available on request
- Full colour
- Spot colour
- Inside print
- Base flap print
Finishes
- Matt lamination
- Soft-touch lamination
- Gloss lamination
- Foil stamping
- Embossing
- Spot gloss
Extras
- Windows
- Card inserts
- Dividers
- Hang tabs
- Tamper seals

See the board and finish guide for what each option looks like.
Production and Delivery
Production takes 4–7 working days after you approve the free design proof. Delivery to the UK mainland is free and tracked, and arrives in 2–3 working days once the order leaves production. The tracking link comes to you by email.
Reprints and Refunds
Check the order when it arrives. If anything is misprinted or damaged, report it within 10 days with a photo and we reprint or refund the items affected. Read the full returns and reprints policy.
Need it by a date?
Tell us the date with your sizes and we plan the proof and production around it.
Snap Lock Bottom Boxes Specification
| Style | Snap lock base with tuck top, Snap lock base with hang tab, Snap lock window box, Snap lock box with insert |
|---|---|
| Material | White folding board 350 to 450 gsm, Kraft folding board, E-flute corrugated board, Food-contact grade board available on request |
| Full colour, Spot colour, Inside print, Base flap print | |
| Finish | Matt lamination, Soft-touch lamination, Gloss lamination, Foil stamping, Embossing, Spot gloss |
| Extras | Windows, Card inserts, Dividers, Hang tabs, Tamper seals |
| Size | Made to your size in mm |
| Minimum order | Low, quoted per job |
| Price | From £0.25 a box; custom quote by email within one working day |
| Proof | Free design proof before printing |
| Production | 4–7 working days after proof approval |
| Delivery | Free tracked UK mainland delivery, 2–3 working days |
Products That Need a Stronger Floor
Snap lock bottom boxes are chosen when a product is heavy for its size or awkward to support. Glass jars of honey, jam and skincare, candles in glass or tins, bottles of oil or spirits, boxed electronics accessories, hardware such as hinges and fixings, pet treats, coffee bags and bath products all benefit. If a product could push a tuck flap open when lifted, a snap lock is a sensible upgrade.
Retailers also prefer them for products that stand on a shelf, because the flat, locked base sits level and does not bulge. That keeps shelf rows neat and helps the box look premium.
Gift sets are another good fit. A box holding two or three jars, or a candle with a matching room spray, is heavier than any single item, and a snap lock base keeps the set secure when a customer carries it to the till. Adding a simple card divider keeps the products from knocking together.
Board Choices and Strength
Most snap lock boxes are made from folding board between 350 and 450 gsm, heavier than many tuck end cartons because the products are heavier. For very heavy items, such as large candles or glass bottles, E-flute corrugated board gives extra strength while still printing well. Kraft board offers a natural brown finish, and white board gives the brightest print.
The weight of the product and how the box will be handled decide the board. Tell us the product weight and whether the box will be lifted by the top or carried in a bag, and we will recommend a grade.
Humidity can affect board strength too. Boxes stored in a damp outbuilding or a cold stock room can lose some of their stiffness, so if your storage is not heated, consider stepping up a grade or using corrugated board for your heaviest products. Storing flat boxes off the floor, in their original cartons, helps them keep their shape until they are needed.
Sizing Your Box
Measure the product at its widest points, including lids and handles, and add 1 to 2 mm on each dimension for clearance. For jars and bottles, measure the diameter and height, and consider whether an insert or a divider is needed to keep the product centred. A product that moves in a box puts more stress on the base when it is lifted.
Snap lock bases need a minimum footprint to fold correctly, so very narrow boxes sometimes work better with a different base. If your box is tall and slim, we will check the dieline and suggest the best construction.
When you send us a product sample, include any lid, pump or handle exactly as it will be sold. A box sized to a jar without its lid will not close, and it is a surprisingly common mistake when measurements are taken on a busy day.
Print, Finish and Shelf Appeal
Full colour print covers every panel, and spot colours match brand colours precisely. Matt and soft-touch laminations give a premium feel, gloss makes colours bright and wipeable, and foil or embossing adds a highlight to logos. A window lets customers see jars and candles, which helps on the shelf.
The base of a snap lock box is visible when the box is lifted, so some brands print a short message or a pattern on the base flaps. It is a small detail that customers notice when they turn the box over.
Inside print is another option worth considering for gift products. A coloured interior or a short message on the inside of the top flap makes opening the box feel more special.
Getting Started
Send us the product size and weight, your preferred board and finish and a rough quantity. We email a custom quote within one working day, with minimums set per job, and boxes start from £0.25 depending on specification. A free design proof shows every panel, including the base flaps.
After approval, the boxes are produced in 4 to 7 working days and delivered flat with free tracked UK mainland delivery in 2 to 3 working days. Misprints or damage reported within 10 days are put right with a reprint or a refund.
Design Your Snap Lock Bottom Box
Choose the snap lock bottom boxes photo closest to what you have in mind, add your logo, drag it into place and set the size. Send it with your sizes and we reply with a custom quote and a free design proof.

Drag the logo, or select it and use the arrow keys (Shift moves faster, + and − resize).
Related Products
Other packaging that is often ordered alongside snap lock bottom boxes.

Reverse Tuck End Boxes
Custom reverse tuck end boxes are the everyday carton behind most of the cosmetics, supplements and small gadgets on a shop shelf.

Straight Tuck End Boxes
Custom straight tuck end boxes are folding cartons where the top and bottom closing flaps both tuck in from the same side,…

Auto Lock Bottom Boxes
Custom auto lock bottom boxes have a pre-glued crash-lock base that snaps into place as soon as you open the box, giving a…

Tuck End Auto Bottom Boxes
Custom tuck end auto bottom boxes combine a base that locks itself as the carton is opened with a simple tuck flap at the top…
Snap Lock Bottom Boxes Questions
What buyers ask before ordering snap lock bottom boxes.
What is the difference between snap lock and auto lock?
A snap lock base is folded by hand and needs no glue. An auto lock base is pre-glued so it springs into place, which is faster to pack but costs more to produce.
How heavy a product can a snap lock box hold?
Much more than a tuck end box. The exact limit depends on the board, so tell us the product weight and we will recommend a grade.
Is it slow to fold?
It takes a few seconds longer than a tuck end. Most people pick up the folding sequence quickly.
Can I add a window?
Yes. A window lets customers see jars or candles. We place it so it does not weaken the base or corners.
Does the box need tape?
No. The base locks without tape or glue, and the top closes with a tuck flap.
Can I print on the base flaps?
Yes. Some brands add a short message or pattern that shows when the box is lifted.
Is corrugated board available?
E-flute corrugated board is available for very heavy products and still prints well.
What is the starting price?
Snap lock boxes start from £0.25 each, depending on size, board, finish and quantity. Your custom quote gives the exact figure.
Can very narrow boxes use a snap lock base?
Very narrow boxes may not fold well with a snap lock base. We check the dieline and suggest an alternative if needed.
What if the base does not lock properly?
Report any manufacturing fault, misprint or damage within 10 days of delivery and we will reprint or refund.
Get a Price for Your Snap Lock Bottom Boxes
Fill in as much as you know. Sizes are in mm (internal sizes for boxes). If you have artwork, attach it; if not, a logo is enough to start the proof.
We reply with a custom quote by email within one working day, then send a free design proof before anything is printed.
- Phone+44 7578 382054
- WhatsAppMessage us
- Emailinfo@shopcustomboxes.co.uk
- HoursMonday to Friday, 9 am to 5.30 pm UK time
- OfficeOffice 704, 85 Dunstall Hill, Wolverhampton, WV6 0SR