6x2 treated timber is versatile and can be used for internal and external projects, thanks to the sealing and pressure treating of the timber. It's treated with Tanalith 'E' to prevent rot. Please Note: Finished sizes typically arrive slightly under nominal (often around 2mm less in thickness and 5mm less in width). Colour and surface appearance vary naturally and by treatment batch. Seal all cut ends and notches with a suitable end-grain product.