Satin Chrome Marine Grade Double Combination Mechanical Keyless Storeroom Lever Lock with Passage FunctionThe LOCKEYUSA 3835DC Satin Chrome Marine Grade is a commercial double combination digital mechanical push button lever door or gate lock (gate boxes sold separately). The 3835DC fits doors or gates that are 1 1 8 in. to 2 in. thick and can go up to 5 in. thick with an extension kit (sold separately). Included in the 3835DC are rubber trim plates that will protect the lock from the elements. From the outside and inside, the lock is opened with an