Use 7-bracket system to hang french doors, double doors, hollow core doors, and solid core doors with or without drywall installed. Ideal to use during rough-in or finish stages of construction. Brackets constructed of durable metal. Standard 2-1/4" trim easily covers brackets. Single door kit includes: 7 metal brackets (installs up to a 6' wide double door), (7) 1-5/8" wall connector screws, (14), 1/2" jamb connector screws, and complete instructions for interior, exterior doors and windows.