Exposed Copper Trapdoor is a partially oxidized variant of the copper trapdoor that can be opened and closed manually without requiring redstone. It is craftable from exposed copper ingots and can be obtained naturally in trial chambers in its waxed form.

Exposed copper trapdoors can be mined only with a stone pickaxe or better. They function like other trapdoors, allowing players to open them manually or control them with redstone signals. They are also affected by wind bursts from wind charges.

As part of the oxidation process, exposed copper trapdoors continue to oxidize over time, eventually turning into weathered and oxidized copper trapdoors. Oxidation can be removed with lightning or by right-clicking while crouching with an axe. To prevent further oxidation, they can be waxed using honeycomb.