Sawn and treated timber, regularised to a consistent size, with eased edges for easier handling, and strength graded to C24.
Timber for use in load bearing situations is typically required to be graded to strength classes usually C16 or C24.
Regularised means that the product has a machined finish, giving a regular consistent section size.
C16 and C24 are the most common Strength Class used in the UK and are normally specified by architects or builders for domestic floor joists or the studs in timber-framed walls.
Pressure treated.
Certified from responsible sources.