Please read before orderingSuction Cup only Work on Smooth Surface. Will not Adhere to surface which has cracks, unevenness, porousness, or grooves. Curved surfaces. Unpainted wooden doors. Porous wooden doors. Make sure there is no texture on your door what so ever. It has to be a smooth door or it will not work. Product dimensions : 3.3 x 2.4 x 10.6 inches Please check the mounting height in the picture. The product is much bigger than the usual kick down door stopper for the strong suction system. Please read the manual before installation. Directions for mounting are on the two-page spread inside of the paper card. Please remove the protective film from the suction cup before installation.The protective film is clear plastic sheet. Please clean the surface of the door where the door stopper will be installed. Places the Door Stopper cannot be installed Places where the suction cup cannot maintain a vacuum. A surface which has cracks, unevenness, porousness, texture, grain or grooves. Curved surfaces.Unpainted wooden doors. Porous wooden doors. 1.Please remove the protective film on the suction cup 2.Please clean the surface of the door where the door stopper will be installed. 3. Suction power will weaken if adhesive gel become dirty. If the gel is dirty, please rinse the suction cup with a mild liquid soap and warm water, then air dry to restore the suction.
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