Custom Mailer Box without Flaps
Removing the side flaps sounds like a downgrade and in the right application it is genuinely the better choice. You use less board, the dieline nests tighter on the sheet, and the box folds faster because there is one less step. For light products traveling short distances, the flaps were never doing much anyway. We produce a lot of mailer box without flaps work at ZEE Packaging and cost efficiency is why clients ask for it.
Less Board, Lower Cost
A mailer box without flaps uses noticeably less material.
- No side flaps means less board per unit
- The dieline nests tighter, so more boxes come off each sheet
- Fewer folds means faster assembly at a packing bench
- Lighter weight, which can help with courier pricing
- Simpler structure, so temporary staff learn it immediately
- The saving compounds across a high volume run
Most brands moving to a mailer box without flaps do it to bring the unit price down on lightweight orders.
Know What You Are Giving Up
We would rather be straight about the trade off.
- Less rigidity at the ends, since there is no doubled wall
- The box relies more on tape or adhesive to hold square
- Contents can shift sideways if the fit is loose
- Less puncture resistance at the corners
- Heavier products will splay the sides outward
- Not ideal for parcels going through multiple handling networks
- Roll end tuck front the standard mailer box without flaps
- With an adhesive strip sealing without tape
- Book wrap style folding to the thickness of flat goods
- Simple tuck top closing from above
- With a die cut insert compensating for the lost rigidity
- Printed interior version branding on the inside face
Sizes We Print Regular
Every mailer box without flaps is built to your product, though these run often:
- 6" x 4" x 2" for small items
- 8" x 6" x 2" for a standard light order
- 10" x 8" x 3" for a mid size product
- 12" x 9" x 2" for apparel and flat goods
- 9" x 6" x 1" for books and prints
- 11" x 8" x 3" for slightly larger orders
Send us the filled weight honestly, since this format suits lighter contents and we would tell you if it is the wrong choice.
Board And Print
- E flute corrugated for light single item orders
- B flute where a little more rigidity is needed
- Kraft corrugated for a plain, low cost outer
- White corrugated where you want brighter print
- One color flexo, the cheapest branded route
- Litho laminated where full color matters
A snug internal fit matters more here than on a flapped format. Without doubled ends, movement inside is what causes most of the damage we hear about.
Materials Worth Considering
- Recycled corrugated, standard across these grades
- FSC certified board, certificate available on request
- Soy based ink through the whole run
- Less board used per unit than a flapped equivalent
- Paper tape and paper void fill instead of plastic
- Right sizing so you are not shipping air
The Way We Handle It
- 100 unit minimum, so a small brand can test the format
- Free 3D mockup and flat proof before anything prints
- Free dieline drawn by our own designer
- Physical sample on request to check rigidity under load
- Urgent turnaround at 5 to 8 business days
- Free shipping worldwide, including to your fulfillment center
Frequently Asked Questions
How much cheaper is it?
Usually a modest saving per unit, though it compounds noticeably across a large run. The tighter nesting is where most of it comes from.
Is it strong enough for shipping?
For light products over short routes, yes. For heavier goods or long international transit we would recommend flaps instead.
Do we need tape?
More than with a flapped format, since the structure relies on the closure. An adhesive strip handles it neatly.
How much does a flapless mailer box cost?
Rough estimate is $0.28 to $0.75 per unit for a plain kraft format, $0.45 to $1.20 with one color print and $0.80 to $2.00 for full color at moderate quantity. Volume moves it. Shipping is included in our price. This is estimate only, so ask our team for a exact quote.
Will contents shift inside?
They can if the fit is loose. Right sizing matters more here than on a flapped box, so we size it tightly.
Does it assemble faster?
Slightly, since there is one less fold. Across a busy day that adds up more than people expect.
Can it be printed inside?
Yes, and it costs the same as on any other mailer. Inside print is what appears in unboxing photos.
