AUCorflute 3 mm vs 5 mm: Which Thickness Do You Need? (2026)
Choose 5 mm corflute for anything staked into the ground, fixed to a fence or left outdoors, because it holds its own weight; 3 mm is lighter and only suits short-term signs that are supported or hung flat indoors. Both print the same, so the choice is purely structural. Vivid Ads prints every corflute sign on 5 mm board, from $4.39 a sign inc GST for 100 signs at 450 × 600 mm (as at 2 Nov 2026).
3 mm vs 5 mm at a glance
| 3 mm corflute | 5 mm corflute | |
|---|---|---|
| Rigidity | Flexes; needs support | Holds its own weight |
| Best for | Short-run indoor and promotional signs that are supported or hung flat | Real estate boards, construction and site signs, election signs, fence and stake mounting, outdoor use |
| Outdoors in wind | Can bend and flap | Stays flat on stakes and fences |
| Print quality | Same | Same |
| Available from Vivid Ads | Not currently stocked: contact us first | Yes, every sign on our corflute page |
Corflute is measured by the depth of its flutes. The thicker 5 mm board has deeper flutes, which is what makes it stiff. A 3 mm sign that flexes in the wind fails the job; a 5 mm sign does not fail for being too rigid. If in doubt, order 5 mm.
5 mm corflute sign prices
Live website prices as at 2 Nov 2026, in AUD including GST, for full-colour single-sided 5 mm corflute signs with your own print-ready artwork. Delivery is calculated at checkout by postcode. Optional extras listed on the product page, such as design services, are not included in these prices.
| Size | Quantity | Total | Per sign |
|---|---|---|---|
| 600 × 900 mm | 1 | $136.13 | $136.13 |
| 600 × 900 mm | 5 | $136.15 | $27.23 |
| 600 × 900 mm | 10 | $147.50 | $14.75 |
| 600 × 900 mm | 50 | $439.50 | $8.79 |
| 600 × 900 mm | 100 | $754.00 | $7.54 |
| 450 × 600 mm | 10 | $136.10 | $13.61 |
| 450 × 600 mm | 100 | $439.00 | $4.39 |
| 900 × 1200 mm | 10 | $220.80 | $22.08 |
Quantity drives the price far more than size, because set-up is the same however many you print. One 600 × 900 mm sign and five cost almost the same, so if there is any chance you will need a spare, order five or ten. Price your exact size and quantity in the Corflute Signs calculator.
Which thickness for which job?
Real estate and open-home signs
Use 5 mm. Signs on stakes in a front yard or cable-tied to a fence need to stay flat in wind and rain for weeks.
Construction and site safety signs
Use 5 mm. Site fences move and signs get knocked, so rigidity matters. Order eyelets if you will cable-tie the sign.
Election signs
Use 5 mm. Election corflutes go on stakes and fences and stay out for days or weeks. The 600 × 900 mm size is the most common election size. Every election sign must carry the correct authorisation statement, so check the rules for your state before you upload artwork.
Indoor promotions and point of sale
3 mm can work if the sign is supported, for example on a stand or hung flat, and is only needed for a short time. Because we do not currently stock 3 mm, a 5 mm sign is the simplest option here too.
Sizes and finishing
- Standard sizes: 600 × 450, 600 × 900, 900 × 600, 900 × 1200 and 1200 × 900 mm.
- Custom sizes: any size from 150 × 150 mm up to 1200 × 900 mm (or 900 × 1200 mm), the largest single sign we can print.
- Eyelets: clear plastic eyelets for cable ties and fences.
- Stakes: add wire step stakes for signs going into the ground. Flute direction is not guaranteed, so if your signs must have vertical flutes for stakes, contact us before ordering.
- Printing: full colour, single-sided, printed directly onto the board. Double-sided corflute is not available at the moment; two single-sided signs mounted back to back is the usual alternative.
Production and pickup
The production time on our corflute page reads: "24hrs if the artwork is approved by 3pm Melbourne time on a working day." Larger orders take longer to be ready to dispatch, counted in working days after proof approval: 1 to 15 items in 1 working day, 16 to 40 in 2, 41 to 100 in 3 and 101 to 200 in 4. Over 200, our production team confirms the date. Delivery time is added after dispatch.
Corflute signs are printed at our factory in Derrimut VIC, and you can pick up free from the factory. For prices at higher quantities, see our corflute sign prices guide.
Frequently asked questions
What is the difference between 3 mm and 5 mm corflute?
The difference is rigidity, not print quality. 5 mm corflute has deeper flutes, so it holds its own weight on stakes, fences and outdoors. 3 mm is lighter and more flexible, so it suits short-term signs that are supported or hung flat indoors.
Is 5 mm corflute better for outdoor signs?
Yes. For real estate, construction, site safety and election signs, 5 mm is the right choice because it stays flat in wind and does not bend on stakes or fences.
Does Vivid Ads print on 3 mm corflute?
Not currently. Every sign ordered from our Corflute Signs page is printed on 5 mm board. If your job specifically needs 3 mm, contact us before ordering.
How much do 5 mm corflute signs cost?
As at 2 Nov 2026, at Vivid Ads ten 600 × 900 mm signs cost $147.50 inc GST ($14.75 each), 100 cost $754.00 ($7.54 each), and 100 signs at 450 × 600 mm cost $439.00 ($4.39 each). Prices are for single-sided full colour with your own print-ready artwork.
What size corflute signs can you print?
Standard sizes are 600 × 450, 600 × 900, 900 × 600, 900 × 1200 and 1200 × 900 mm. Custom sizes can be entered from 150 × 150 mm up to 1200 × 900 mm (or 900 × 1200 mm).