Works on Hinged Door or Sliding Doors. NON-MARRING YOKE: (removable for sliding doors). Helps protect against finish damage. DESIGNED TO FIT MOST DOORS: Simple push button adjustment requires no tools. Extends to 46". HIGH STRENGTH STEEL TUBE: 20-gauge steel for greater strength PADDED FOOT: provides sure grip on most floor surfaces and protects against finish damage. PORTABLE: Collapses to 31" to fit in most suitcases and garment bags. LIFETIME GUARANTEE