Speed Latching Control Auomatic Door Closer Closing Device

Material: Aluminium alloy Suited Door: Stainless Steel Security Door Feature:- Silent mode on off- Automatic hydraulic cushioning door closers- Latching Speed Control/Dual Valve Closing- Precise sealed, preventing oil leakage. Continuous adjustment of closing and latching speed: the fast speed can be adjusted to within 3s from 90 degree, slowness close can reach to 60s or more.-Includes Mounting accessory Note:1.We provide clear pictures & measurements where possible. Please check as much as possible to ensure that this item fits your need. Note:2.Please allow 1-3mm difference due to manual measurement.