Reinforced Trapdoor

A lockable hatch cover in the stone tier

In ARK: Survival Evolved and ARK: Survival Ascended, the Reinforced Trapdoor is the second of the trapdoors on offer. Its item text: "This small reinforced door can be used to secure hatches." Like any trapdoor, it closes off a way into a structure and shuts out the elements. Despite being wooden, it ranks with stone structures, the ARK Wiki notes.

Placing and locking it

It goes only into a Hatchframe, where it can be locked and unlocked: strangers stay out while you and your tribemates can still pass. Open, shut or missing, the trapdoor makes no difference to how well a house insulates.

What can damage it

The trapdoor is treated as a stone structure. Stone pieces match their wooden counterparts in durability but suffer significantly less damage of every kind. The wiki's list of what can still hurt it gives a percentage for many entries, for example:

• explosives at 150% and the Tek Sword at about 218%
• the Cannon at about 137% and the Tek Rifle at about 50%
• the Ballista Turret at 40% and metal weapons at 5%
• the DodoRex and Dodo Wyvern at 300%, and the Titanosaur and Defense Unit at about 462%
• the Dunkleosteus and Giganotosaurus at 15%, and alpha creatures and bosses at 10%

The Roll Rat, Magmasaur, Arthropluera, Managarmr, Deathworm and Chalicotherium can damage it as well, as can Titans, the Rock Elemental and Corrupted, Enraged and Astral creatures. The Therizinosaur manages about 2%, and only with its headbutt.

Crafting and loot

The engram unlocks at level 26 for 10 engram points. A trapdoor is crafted in the inventory in 3 seconds from 20 Stone, 14 Wood (Fungal Wood works too) and 8 Thatch, and gives 1.7 XP according to the wiki. Each one weighs 4 and a stack holds 100, so a full stack weighs 400. Our records count 44 crate types that can contain it, including the Genesis Blue, Cyan, Green, Orange, Purple and Red crates on Genesis Part 2.