Marie Heavy Duty Automatic Door Closer For Residential And Commercial Doors, High Quality - automatic door closer is made of high standard aluminum alloy. It can automatically and quietly close your door. Will improve your quality of life. You don't have to yell "shut the door" nearly as much any more. Adjustable Speed - Door closer has 2 valves independently control the closing and latching speed. You control the closing speed as you like. Easy to install Quality Standard - Door closer comes with a detailed and clear installation manual and installation video. It will be a simple and smooth installation. The hydraulic door closer has passed CE, UL, 3C certification and fire test. Produced according to EU production standards" Widely Applicable - Adjustable Door closer size 3 is used for door weight of 40-65KG and door width of 830-950mm. Automatic closing is suitable for right and left opened door, wood, metal door, residential and commercial door, exterior/interior door closer, fire door,hotel, condominium, apartment complex, warehouse. Warranty: Provide 3-year warranty, hydraulic door closer more than 500,000 opening and closing experiments, you can use it with confidence. If you are not satisfied with the purchased product, please let us know and we will provide you with a full refund or replacement. If you need the parallel plate, please contact us and we will send it to you.