This standard 75mm square timber post is the common default post designed to support a traditional brown treated and framed fence panel such as a lap or closeboard panel for example having been brown pressure treated for in ground use these fine sawn 75 x 75mm square wooden posts are also superior class 4 rated designed to be permanently exposed to wetting in either ground or fresh water contact being formed from kiln dried redwood timber the likelihood of twisting or bowing is reduced