Long triangular mailing tubes for posting oversized rolled prints, architectural plans, banners, and artwork across Australia. Also known as tri-tubes — the flat-sided alternative to round cardboard mailing tubes that won’t roll off benches, conveyor belts, or doorsteps. Available in 60mm, 75mm, and 90mm diameter across extended lengths and multiple board thicknesses. No plastic end caps needed — 100% recyclable. Buy long triangle mailing tubes online — Australian made with delivery Australia-wide.

Triangle Tubes Don’t Roll

Round mailing tubes roll off every surface they touch — benches, conveyor belts, loading docks, and doorsteps. Triangular mailing tubes sit flat and stay put. Couriers and transport companies prefer them because they handle better on conveyor systems, stack neatly, and don’t attract freight surcharges for rolling items.

Stronger Than Round Tubes

The rigid triangular cross-section resists bending and crushing better than round cardboard tubes of the same board weight. Your posters, plans, and prints arrive flat — not kinked halfway along the tube where a round tube buckled in transit.

Custom Lengths Available

Can’t find the right length in our stock range? Triangular tubes can be made to almost any length. Contact us for custom sizing on oversized prints, architectural plans, and long items.

Australian Made & 100% Recyclable

Manufactured in Australia from sustainably sourced paper. No plastic end caps, no foam inserts — the whole tube goes straight in the recycling bin. 100% recyclable with a minimum 50% recycled content.