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C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 72 x 97mm (4x3)
£6.84 - £39.30 per piece (Ex VAT)£8.21 - £47.16 per piece (Inc VAT)Treated timber is suitable to be used externally and is suitable for wet areas or areas where the timber will be coming into contact with the ground. Examples of treated timber uses are outdoor decking, shed bases, posts, sleepers. Regularised timber has...
Our 4x3 timber is pressure-treated to resist moisture, rot and insect damage, making it ideal for outdoor or exposed environments.
Why choose 4x3 timber?
4x3 timber (approx. 75mm x 100mm) is ideal for structural and heavy-duty applications. Known for its strength and durability, this size is commonly used for roof beams, joists and framing where stability is essential, so it's the perfect choice for projects that need extra support. Its thicker profile provides added strength, making it suitable for:
- Roof structures
- Load-bearing frames
- Outdoor construction projects
If you’re looking for a strong and reliable timber size for structural work, 4x3 timber is an excellent option.
Treated timber for outdoor durability
For external use or damp environments, this timber is pressure-treated to protect against rot, decay and insect attack, making it the ideal choice for outdoor framing, pergolas and heavy-duty garden structures.
Browse our range of 4x3 timber in different lengths to suit any job. Whether you’re working on a structural frame or a garden project, you can trust our timber for strength, stability and long-lasting performance.