The 6 in. x 6 in. x 8 ft. Pressure-Treated Pine Lumber has been treated for ground contact and is ideal for retaining walls, decks, stair support posts and walkways. It can be painted or stained. Manufactured from southern yellow pine. Micronized copper azole coating to protect against termites, rot and fungal decay. Smooth texture. 5-1/2 in. x 5-1/2 in. x 8 ft. Paintable and stainable. Use for decks, play structures, raised beds, planter boxes, retaining walls, walkways, outdoor furniture, landscaping and other outdoor projects. Lumber, pressure-treated lumber, wood, pressure-treated wood, pine lumber, pine wood, 6 in. x 6 in. x 8 ft. lumber, 6 in. x 6 in. x 8 ft. wood.