About This [Setup Time as Needed]: AUTENS Chicken Coop Door with timer can automatic open or close by setting up a fix time, with timer control to decide when to close or open. and can manally open if needed at any time. [Large Enough] : This Coop door can open up to 9.64inch *8.27inch which suit for most poultry such as chickens and ducks to easily get in and out. [Easy Install and Setup]: with detailed user manual and video available for guidance it's easy for your to install and setup the automatic chicken coop door.No complicated wiring or cabling, using 3 x AA Alkaline batteries(NO INCLUDED) to powered(WARM TIPS: Rechargeable lithium battery is more suitable for colder climates). [Works in extreme weather]: This Aluminum chicken coop door is made of aluminum and ABS, which can work in snow, rain(IP45) and dust above -6°C . Protects your chickens in all weather conditions. Aluminum alloy oxidation door panel and frame, which is anti-corrosion and rust proof, can use for a longer time. [Safety for Your Poultry ]: This chicken door with safety model which can preventing injury from your poultry. The door will stop and reverse if there is a chicken stand underneath it while it is closing. Overview Brand : AUTENS Product Dimensions : 1.96"L x 9.6"W x 12.59"H Material : Metal Specific Uses For Product : For Chicken coop Special Feature : Durable, Weather Resistant