ATS Building Products announces the arrival of a new size in our engineered wood range – the Metsa Finnjoist 300×63 – in stock now.
Metsa Finnjoists are renowned for their superior strength, stability, and design flexibility, making them the ideal solution for both residential and commercial flooring systems. Now, with the addition of the 300×63 Finnjoist, builders have even greater flexibility when it comes to designing stronger, more efficient structures.
The 300×63 Finnjoist is H2S treated, providing termite protection for internal, above-ground use. The 63mm flange width allows for easier alignment with wall frames, provides more surface area for fixings, and makes it easier to fasten floor sheets
Why Builders Choose Metsa Finnjoist
Manufactured with a high-quality OSB3 web and strong, dimensionally stable Metsa Kerto® LVL flanges, Metsa Finnjoists deliver consistent strength and rigidity across the floor system. This results in:
- Longer spans – reducing the number of supporting walls or beams
- Lightweight handling – faster and safer installations
- Flexible design – ideal for routing plumbing and electrical services
- Quiet floors – minimised floor movement and acoustic noise
- Sustainability – PEFC Certified, responsibly sourced materials
- Cost-efficiency – less waste, fewer materials needed, faster build times
- Australian standards compliance – meeting AS/ANZ 4357.0 and AS1720.1




Each Metsa Finnjoist is CE marked, BM TRADA Q-Mark certified, and produced under ISO 9001 quality assurance and ISO 14001 environmental management systems.
Available Sizes:
200×58 | 240×53 | 240×69 | 240×96 | 300×45 | 300×53 | 300×63 | 300×69 | 300×96 | and 400×89 — up to 12m lengths.
Build Better with ATS
At ATS Building Products, we’re committed to supplying the highest quality construction materials backed by expert support. Our expanded Metsa Finnjoist range gives you more options to build faster, smarter, and better.
Stock for the 300×63 Finnjoist size is limited. Sales commence 1st May, so be sure to secure your order early.
Need advice or ready to order?
Call us on 1800 577 551.