Objects Properties

Object SizeAC or ReflexFortitudeHPExample
Tiny1055Bottle, book
Small8810Treasure chest, manacles
Medium51020Door, statue
Large41240Wagon, vault door
Huge315100Big statue
Gargantuan220200Even bigger statue


Material or CompositionHit Point Multiplier
Very fragile× 0.25
Fragile/intricate× 0.5
Reinforced× 1.5
Paper or cloth× 0.1
Glass or ice× 0.25
Leather or hide× 0.5
Woodx 1
Stone× 2
Iron or steel× 3
Adamantine× 5

Published in Dungeon Master's Guide, page(s) 65.