Barrette Outdoor Living Standard 2-1/4-in Black Gate Latch in the Gate Hardware department at Lowes.com
Amazon.com: HILLMASTER Heavy Duty Self-Locking Gate Latch for Wooden Fence, Post Mount Automatic Gate Lock Gravity Door Latch Hardware for Secure Pool, Outdoor Garden, Metal Gates Vinyl Fence, White Finish : Tools
Gate locks with code, panic exit or key? Different types of locks for gates - Gatemaster Locks
Amazon.com: JOUNJIP GB2020 Gate Lock Box Steel Gate Box - for Double Keypad Mechanical Combination Lock - for Metal Gates and Fence (NOT for Aluminum GATE) - 2 3/8" Inch 60mm Backset :