17 (13 when broken); construct armor; Fort +10, Ref +3, Will +4
HP
20
Construct Armor (Hardness 9) Like normal objects, an animated armor has Hardness. This Hardness reduces any damage it takes by an amount equal to the Hardness. Once an animated armor is reduced to less than half its Hit Points, or immediately upon being damaged by a critical hit, its construct armor breaks and its Armor Class is reduced to 13.
Running this fight? Add the animated armor to the initiative tracker: type its name and the AC, hit points and Perception for initiative fill in, and the book button shows this stat block mid-fight.