Stop feeling guilty about leaving your pets at home and give them the freedom to come and go as they please. Our PawHut doggie door will be used for pets up to 110 lbs. With the help of a quick installation guide, this 2-way locking dog stopper can be easily installed on doors and walls. Exterior rain seal is waterproof. Brush strip eliminates noise from the door closing. A locking panel, can not only protect the safety of the home but also reduce heat transfer in rough weather.