Door

A hidden mechanism causes it to retract into the ground.
Overview
The Door is a piece of furniture. It can rotate into daily stock at the Carpenter's Shop, and it is also available from the Furniture Catalogue.
Players who choose the Riverland Farm map during character creation begin with two Doors inside their house.
Aside from its decorative role, the Door is notable mainly for its availability: it can be bought whenever the catalogue is accessible, and it may also show up in the Carpenter's Shop rotation. The Riverland starting house placement means it can be seen very early in a playthrough without needing to purchase it first.
Official description
A hidden mechanism causes it to retract into the ground.