abracadabra The foot door opener hyShell is easy to install. All material can be stuck. The installation takes less than 20 minutes. No need for an expert. The manual shows the whole installation process. The high quality material are designed for a long-term usage. The foot door opener is after the installation immediately ready to use. As soon as the hyShell is installed, you can open the door hygienically with your foot. Easy and efficient.