CLS, Canadian Lumber Specification (or ‘Standard’ or ‘Size’)

Generally used for stud work and shed framing. It is a regular machined size with eased edges (rounded corners).
Something to bear in mind with CLS, the actual finished size will finish slightly smaller than regularised carcassing.

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Sawn Timber

Although still widely known as ‘Sawn Timber’, most carcassing now has a semi-planed finish, which in most cases will reduce the size of the product i.e. 47mm x 100mm (4″x2″) when regularised, will in fact finish approx 45mm x 95mm.
Smaller sections machined out of regularised stock, may come with 2 semi-planed sides or faces and 2 sawn.

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PSE, (Planed Square Edge), also known as PAR, (Planed all Round). With the exception of some sizes, most of our planed timber is stocked in a 5ths redwood softwood.

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