Easy to keep your door stay open,if you want fresh air to circulate. More secure and windproof solution to holding side hung doors open,save you from the disturbance of door squeak. High quality rubber bumper can stop doors firmly and protect your valuable carpet, floor and tile. Suitable for external use on a wide range of applications,particularly those doors with big bottom gap,simply kick the stop up or down into position with foot. Easy to install.First measure the best height to fix it on the door, then drill three pilot holes in the door, tighten self tapping screws,complete. Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you!