H3 / H4 Treated Pine is a plantation grown timber that is structurally graded and is the ideal timber to be used for external load bearing applications. Treated to AS1604, H3 Treated Pine is treated against termites, rot and fungal decay. The protection is impregnated into the timber giving an external warranty of up to 50 years. Treated Pine is light, durable and easy to use, highly stable, strong and able to hold nails well.
Available in the following framing section sizes
| Treatment Level | Section Size | Length in metres |
| H3 | 70 x 35 / 45 | 3.6, 4.2, 4.8, 5.4, 6.0 |
| H3 | 90 x 35 / 45 | 3.6, 4.2, 4.8, 5.4, 6.0 |
| H3 | 120 x 35 / 45 | 3.6, 4.2, 4.8, 5.4, 6.0 |
| H3 | 140 x 45 | 3.6, 4.2, 4.8, 5.4, 6.0 |
| H3 | 190 x 45 | 3.6, 4.2, 4.8, 5.4, 6.0 |
| H3 | 240 x 45 | 3.6, 4.2, 4.8, 5.4, 6.0 |
| H4 | 90 x 90 | 2.4, 3.0, 3.6 |
NOTE:
- H3 is used in applications that are outside above ground
- Weatherboards, fascia, window joinery, framing and decking
- H4 is used in applications that are outside in ground
- Fences, greenhouses, pergola posts, decking stumps, landscape timber (non-critical structures)
