The Left Housing to suit B-4 is a precisely manufactured replacement side shell designed to fit the XPOWER B-4 Mobile Pro Force Pet Dryer. As the outer casing for one side of the dryer, this left housing restores the unit’s structural integrity and housing symmetry, especially if the original shell has been cracked, damaged or worn out. According to the official parts list for the B-4 model, “Left Housing” is the designated part number for that side of the casing.