Excellent for both indoor and outdoor use, this door is multifunctional for garden gates, room doors and other various settings with a weight range of 20-40kg in the door specifications This door close has an adjustable spring tension mechanism and is easily adjustable with the included hexagon shape to ensure a soft and quiet door closing every time Rust-resistant and durable steel automatic door closes provide convenient door closing This package comes with all the necessary hardware and is difficult to install for hobbyists and professional installers seeking a stable door closing solution Ideal for homeowners, administrators and hotel maintenance staff looking to automate the door closing process and maintain a quiet environment, Manufacturer: LEMEIGUO