【Adjustable Spring Design】: Spring door stoppers is higher than ordinary heavy duty door stopper and can be adjusted in height, making it more versatile.This large door stop measures 3'' in height, 5.1'' in length, and 1.8'' in width, weighing 7.2 ounces.The door stoppers for bottom of door is suitable for door gaps ranging from 0.5 to 3 inches and can keep the door open even in strong winds, with extremely high stability. 【Anti-Slip Design】: The heavy door stoppper is made of high-quality stainless steel and anti-slip rubber. The rubber at the top and bottom of big doorstop features wave and granular patterns respectively, which is flexible, wear-resistant and has extremely strong grip, ensuring the door is securely fixed. 【Wide Application】:High door stops suit various occasion:outdoor,indoor,home,commercial, school, office,etc,it is also applicable to various types of doors and floors: wooden door, glass door, heavy industrial door, iron door, steel door, garage door, metal door, security door,carpet, wooden floor, tile, concrete,linoleum,stone,etc. 【Convenient and Durable】:The tall door wedge is simple to use,just insert it at the bottom of the door, and by pressing the spring with your foot, you can easily adjust the height,then move the door onto the weighted door stopper, release your foot,it can fix the door at the position you want.The metal doorstops is easy to clean, simply wipe it and it will remain clean.It is sturdy and durable, making it the top choice for long-term use. 【Our Service】:Our rubber door stopper provides 3 years warranty, please contact us if you have any problem after receiving our door stoppers heavy duty, we will solve all problems for you within 10 hours.Wish you a happy life! How heavy duty door stopper work? Place the heavy duty door stopper at the bottom gap of the door, and by stepping the spring with one foot, you can adjust the door stop to the appropriate height,then move the door onto the door stop,release your foot, it can be fixed in the position you desire.This door stopper has extremely strong stability,even in strong winds, it can keep the door open in a stable state. Usage Tips: 1.Large heavy duty door stopper wedge has a built-in spring mechanism, which is pressed down and pushed under the door to hold your door securely in place. 2.When using door stop wedge on smooth ground, it is necessary to wipe off the dust on the ground and the door stop first to ensure that the door wedge has the best grip to block heavy doors. 3. When the large heavy door stopper needs to be removed, you could press down the door stopper to stress spring to remove it. Heavy door stoppers for bottom of door features: 1,Large and heavy 2,no installation 3, waterproof and rust-proof 4,convenient, beautiful,strong and durable Large door stoppers specifications: 3 inches high, Weighing 7 ounces Big door stopper material: stainless steel, rubber Tall door stop color: silver,black