Salvage condition means you will receive the goods in their original condition.
Ready for installation means that you will receive the goods in the prepared condition that you require, e.g. E.g.:
The surface of the wood is treated with a rotating nylon brush. This causes soft wooden parts and dirt to come off the surface, while the hard components remain and define a structured surface.
Is the straight cutting of the original edges of the boards (tree edges). Edged boards therefore enable easier and gap-free installation.
Planed on the back
The underside of the wood is processed by removing chips from the material with the planer blade. The goal is to smooth the surface and bring the boards to a uniform thickness.
Tongue and groove
The groove is a depression on the side of the component, the tongue, in turn, is a kind of protruding wedge that fits into the groove like a key into a lock. The spring can be attached directly to the board or inserted as a separate part (external tongue).