Industry standard timber sizes

Common sizes for sawn and dressed timber. Other sizes can often be milled to order.

The tables below show the thicknesses commonly available for each width. Availability varies by species and grade, so please ask us about the sizes you need. We can mill non-standard sizes to order.

Sawn Timber Sizes
Recommended Dressed Finish Timber Sizes
Radiata Pine Kiln Dried Dressed All Round Finish Sizes
Kiln Dried Hardwood & Pine
Treated H3 Finger Jointed Pine includes F7, GL8 & GL10
F8 Treated Primed Pine Posts

Sawn Timber Sizes
Width (mm)	Available thicknesses (mm)
50	25 38 50
75	25 38 50 75
100	25 38 50 75 100
125	25 38 50 75 100 125
150	25 38 50 75 100 125 150
175	25 38 50 75 100 125 150
200	25 38 50 75 100 125 150 200
225	25 38 50 75 100 125 150 200
250	25 38 50 75 100 125 150 200 250
300	25 38 50 75 100 125 150 200 250 300

Recommended Dressed Finish Timber Sizes
Width (mm)	Available thicknesses (mm)
12	12
18	12 18
30	12 18 30
42	12 18 30 42
66	12 18 30 42 66
90	12 18 30 42 66 90 116
92	12 18 30 42
110	12 18 66 90
116	12 18 30 42 66 90 116
138	12 18 30 42 66 90 138
165	18 30
185	18 30 42 66 90
230	18 30 42 66 90
280	18 30 42 66 90

Radiata Pine Kiln Dried Dressed All Round Finish Sizes
Width (mm)	Available thicknesses (mm)
12	12 19 42 70 90
19	12 19 35 42 70 90
35	42 70
42	12 19 35 42
45	35 90
70	12 19 35 45 70 90
90	12 19 35 45 70 90
120	19 35 45 70
140	12 19 35 45
170	19
190	19 35 45
240	19 35 45
290	19 35 45

Kiln Dried Hardwood & Pine
Width (mm)	Available thicknesses (mm)
35	70 90
45	35 70 90
70	35 45 70 90
90	35 45 70 90
120	35 45
140	35 45 70
170	35 45
190	35 45 70
220	35 45
240	35 45 70
270	35 45
290	35 45 70

Treated H3 Finger Jointed Pine includes F7, GL8 & GL10
Width (mm)	Available thicknesses (mm)
66	30 42
90	30 42
138	30 42
140	65
180	65
185	42
230	42
240	65
280	42 65

F8 Treated Primed Pine Posts
Width (mm)	Available thicknesses (mm)
88	88
112	112
135	135
185	185

This information is general guidance only. See our disclaimer, and check current Australian Standards and the National Construction Code for your project. Questions? Ask our team.