Wet letters
Outdoor letterboxes can collect moisture after rain, sprinklers, humidity, or a small leak around the door. A raised mailbox liner helps keep envelopes above the damp base.
Custom-made in Australia
Custom letterbox dry liners, made to fit.
Send us your letterbox measurements. We 3D print a raised, ventilated liner that helps keep mail above damp surfaces and ship it Australia-wide.
Raised grid base
Photo check available
From A$39
The problem
Rain gets in. Mail sits on the wet letterbox floor.
Rusty base
Older metal boxes often have uneven, stained, or rusty floors that hold damp patches longer than expected.
No perfect size
Most letterboxes are slightly different. A custom insert fits better than a generic tray or improvised mat.
Simple process
Measure, print, install.
1
Measure inside
Measure the internal length and width of your letterbox floor in millimetres. Add the front opening height if it is tight.
2
Upload a photo
A quick photo helps us check the shape, lip, door clearance, and whether a notch or split-piece design is needed.
3
Fit and forget
Drop the liner into the base. The raised grid helps lift mail above damp spots while gaps allow air to move underneath.
Common searches
For wet mail, damp mailboxes, and rusty letterbox bases.
DryBox Liner is for Australian homes where mail gets wet in the letterbox because water sits on the floor, condensation builds up, or the base has rust and low spots. It is a custom letterbox insert made from your measurements, not a generic mat.
Designed for real letterboxes
A practical 3D printed insert, not a leak repair.
DryBox Liner is made to reduce contact between mail and damp surfaces. It is ideal for boxes that get mild moisture, pooling on the floor, condensation, or water blown in during rain.
If your letterbox has a major leak, damaged door, or standing water, the liner can still help raise mail, but the box should also be repaired or replaced.
- Material
- PETG or PLA+, chosen for the job
- Design
- Raised ribs with ventilation slots
- Fit
- Single-piece or split-piece for tight openings
- Dispatch
- Usually 3-5 business days after design check
Start your order
Get an instant estimate.
Enter the inside floor size of your letterbox. This estimate is a guide; unusual shapes, very large boxes, or split-piece designs may need a manual quote.
Checkout problem
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FAQ
Will it stop my letterbox leaking?
No. It is not a seal or repair kit. It helps keep mail raised above damp surfaces and improves airflow inside the letterbox.
Is this for Australian letterboxes?
Yes. Each liner is made from your measurements and shipped within Australia. It can suit many freestanding, wall-mounted, and parcel letterboxes if the internal size and opening are measured clearly.
What if my measurements are wrong?
We recommend uploading a photo before printing. For tight or unusual boxes, we can confirm dimensions before production.
Can I return a custom liner?
Custom-made items are usually not change-of-mind returns. If the item is faulty, not as described, or does not meet an agreed requirement, Australian Consumer Law rights still apply.
How long does it take?
Most orders can be printed and dispatched within 3-5 business days after measurements and photos are confirmed.
Launch offer
Testing in Australia now.
Early customers can send a photo for a fit check before printing. Perfect for older, rusty, or awkward letterboxes.
Measure your letterbox