A Barn Padlock is an item sometimes found by Foraging on your farm.
They are used to upgrade the Barn, Silo, and Back Porch Storage areaa.
They cannot be sold and they occupy space in your Barn. One barn padlock has a value of 8 Keys. 3 barn padlocks can obtained by trading 4 Yellow Ribbons and 5 Red Ribbons at the Prize Tent.