Home > Products > Untreated Timbers > 4x6 Timbers > 4×6 WR Cedar #2 Grade S4S This 4×6 Western Red Cedar timber is sold by the board. Left wet and construction grade. This material is S4S meaning all four sides are planed smooth. Boards come in 8′ and 12′ lengths. Actual board dimension is 3-1/2″ thick by 5-1/2″ wide. Length Choose an option8'12'Clear 4x6 WR Cedar #2 Grade S4S quantity Add to cart Add to basket for Quote Purchase online at our TotalWood Store * Please select length and quantity to add to basket for quote.