The present invention relates to isolated polypeptides having cellobiohydrolase activity and isolated polynucleotides encoding the polypeptides. Each of the lever arms has a longitudinal slide groove. A top surface of each of the second regions is lower than that of the first region. At least some of the patterning of the heavily-doped region occurs simultaneously with at least some of the patterning of the second semiconductor material. The floorceiling forms are configured such that the ceiling finishing material, such as but not limited to, sheet rock, any commercially available ceiling material and suspending ceiling grid elements, may be readily attached.