While building a new chicken coop, we sent a nephew to the lumber yard for 20 4x2's to finish framing. They told him they were out of them, but they did have 2x4's and would they work. He returned and asked us if they would work. We told him we really needed 4x2's, but we could make do with 2x4's. He went back to the lumber yard and they asked him how long did we need. His reply: "Need them a long time, were building a new chicken coop!"