home premium rubber door stopper - multi surface door stop wedge with heavy duty design - flexible and non scratching door holder (4 pack, gray) home premium heavy duty construction, keeps any type of door openthese door stopper are intended for holding heavy doors and are best for office and institutional use, though they can fit perfectly at home as wellsimple, elegant design that gets the job donewe believe in keeping things simple. we focus on delivering our customers quality products that get the job done and last long. and this is exactly what these door stoppers are all about.suitable for most types of common use surfaceswhether it is tile, concrete or wooden floor, these stoppers will stop your door from moving. they have a strong, flexible rubber grip 100% lifetime satisfaction guarantee with our lifetime 100% satisfaction guarantee, you will never have to worry about buying yet another door stopper - if you are not completely satisfied with the home premium door stoppers, we will refund your money. no questions asked!important: please check the gap clearance between your door and surface before purchasing any type of door stopper. these doorstops max height is 1.2" so if your doors have bigger clearance they won't work