This case contains 12 Carlon B121ADJH Single Gang Horizontal Adjust a Box Outlet Boxes. These outlet boxes are perfect for electrical installations in commercial and residential buildings. The adjustable design allows for easy installation in various wall depths. The Carlon brand is known for high-quality electrical equipment, making these outlet boxes a reliable choice for any electrician. Each unit is made in the United States and comes in a unit quantity of 5. Use these outlet boxes for a professional and secure electrical setup.