Industry Standard Timber Size

Sawn Timber Sizes

Width (mm) Thickness (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) Thickness (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) Thickness (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) Thickness (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) Thickness (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) Thickness (mm)
88 88 - - -
112 - 112 - -
135 - - 135 -
185 - - - 185