Fit Lock Opening Size: 3.75 x 2.75 x 1.5 Inches, Please to Measure Before Purchasing. By Watching Videos and User's Manual, Know the Installation Dimensions and Password Settings in Advance. Because rv door lock is a modified design, the location of the keyhole is related to the vehicle type. Please measure the size and confirm the position of the keyhole before purchase. Updated Design, 4 Ways to Control the RV Keyless Entry Door Lock. All 50 Fingerprints can be Entered, Easy Access for You and Your Family. Latest Fingerprint Design, Fingerprint Unlocking, Safe and Convenient. 4 Ways to Control the Deadbolt: Fingerprint recognition, remote control, integrated password keypad, and mechanical key. 4 x AA Batteries: Installation requires 4 x AA batteries, please note that rv door lock does not provide 4 x AA batteries required. 100% Waterproof Design Housing: RV keyless entry door lock is made of METAL, waterproof, strong anti-collision capability, protecting you and your family's property. Package Include： 1 x RV Door Lock 1 x Remote Key Fob 2 x Mechanical Keys 6 x Screws 2 x Locking Boards 1 x User's Manual Please CHECK SIZE and latch style with your RV door lock before purchasing. NOTE: Accessories do not include 4 x AA batteries. RV Keyless Entry Door Lock for Travel Trailer: Providing a Safe and Comfortable Environment for You and Your Family.