TRUaire's 100 Series style registers have been the mainstay of new residential construction for more than 50 years. TRUaire's stamped registers are a cost-effective solution for residential applications and come in one-way, two-way, three-way and four-way air throw patterns. The grille face can be ordered with either 1/2 or 1/3 in louvered blade spacing. They can be easily installed in sidewalls and ceilings. These registers can be ordered with an optional aluminum opposed blade damper that has a screwdriver adjustment which is accessible through the face of the registers.