S4S Poplar 4/4 - 5 Pack4 4 Poplar Lumber 5 Pack Kiln Dried Domestic Hardwood S4S Poplar is one of North America's most practical and widely used domestic hardwoods prized for its light creamy white to pale green tones, fine straight grain, and outstanding workability. With a Janka hardness rating of ~540 lbf, it is lighter and softer than most hardwoods, which is precisely what makes it so well suited to its most common applications. Poplar machines effortlessly, holds