Strong and Durable: Heavy-duty door stopper made of stainless steel with rubber components, providing a waterproof and rust-proof design. This sturdy metal door stopper is built to withstand heavy use and is suitable for heavy-duty doors. Adhesion and Non-Slip: Door stoppers for the bottom of doors feature rubber on both top and bottom surfaces to prevent sliding. The rubber provides a firm grip on floors and doors, ensuring stability even in strong winds. Adjustable Design: Spring-loaded door wedge stopper with adjustable height fits door gaps from 1 inch to 3 inches. Unlike shorter models, this adjustable door stopper provides reliable performance for wider gaps. Excellent Door Stop: Large door stopper suitable for commercial swinging doors, metal doors, double doors, safety doors, self-closing hinged doors, and balcony doors with larger gaps. Compatible with glass doors, carpet, parquet, and tile flooring. Safe and Sturdy: Automatically adjusts to the door gap, ideal for commercial, residential, garage, corporate, public spaces, and schools. Holds heavy doors securely open and prevents them from closing due to wind. Color: Black + Silver Material: Stainless Steel Size: 13 cm Package Contents: 1 x Door Stopper Note: Light reflection and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.