- Vertical Clearance Requirements: Ensure safe installation with a minimum vertical clearance of 0.25 inches and a maximum of 1.5 inches between the door and floor. Best suited for inswing doors with a 3mm clearance, the product includes a three-size spacer keyring set for an optimal fit. - Tool-Free Installation: No tools are needed! Simply position the product beneath the handle, slide it under the door, and turn the screw clockwise for a secure fit. The quick-release feature allows for immediate removal by pulling upwards in case of emergencies. - Compatible with Heavy Doors: Designed for doors weighing up to 100lbs, this product is ideal for various door types including interior, hotel, and travel doors. It securely anchors to surfaces such as tile, laminate, and carpet, providing dependable protection across different environments. - Lightweight and Compact: Weighing only 227g and measuring 4.5" x 3.5", the product is easy to transport and store. It includes a durable neoprene extension foot for enhanced grip on thick carpets, making it perfect for both travel and home use. - Practical Applications: - Use in hotels to ensure room security without complicated setups. - Ideal for home use to keep doors secure when needed, such as during gatherings or while moving furniture. - Perfect for travelers wanting extra assurance while staying in unfamiliar accommodations.