These keepers are designed for use with Southco's 91 Series Vantage Down-Under latches. The latch hooks on to this keeper and holds your door closed.
Keepers are not always required! If your application has a lip or edge on the lid that the latch can attach to, you likely don't need this (that's why they're not included). Mounting hardware not included. Available in Zinc plated Steel or Stainless Steel.