Our coach has a residential-sized fridge/freezer:

In order to keep the doors closed as we drive down the road, they have catches and latches, that require a somewhat firm tug to open. Here’s the catch above the right door:

The latch on that door had a crack in it, which didn’t prevent it from working, but it was more rough than usual:

So I bought some replacement catches and latches, and replaced it. You can see the broken one at the bottom, and a new replacement above it:

Now the door opens much more smoothly. An easy fix.