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DOORS
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WOODEN DOOR: Made from alder, applewood, ash, aspen, cherry, chestnut, elm, hickory, maple, oak, poplar, teak or walnut. Size 7 ft. high, 4 ft. wide, 2 inches thick, weighs 300 lbs. (total STR 10 to open). AC 15, 10 hit points, immune to poison and psychic damage. (DMG p. 103)

STONE DOOR: Made from marble, slate, basalt, obsidian, pumice, quartz, chalk, coal, flint, sandstone, shale or granite. Size 7 ft. high, 4 ft. wide, 2 inches thick, weighs 2,700 lbs. (total STR 90 to open). AC 17, 18 hit points, immune to poison and psychic damage. (DMG p. 103)

METAL DOOR: Made from bronze, brass, copper, electrum, gold, iron, lead, platinum, silver, steel, titanium, cobalt, nickel, palladium or tungsten, or iron plated with one of these metals. Size 7 ft. high, 4 ft. wide, 2 inches thick, weighs 3,200 lbs. (total STR 106 to open). AC 19, 26 hit points, immune to poison and psychic damage. (DMG p. 103)

PORTICULLIS: Made from iron. Raising the iron bars with the winch takes an action. If no winch is present, lifting the porticullis or bending its bars enough for characters to pass through requires a successful DC 14 Strength check. The roll can be made with advantage if leveraging tools such as crowbars or metal rods are available. (DMG, p. 104)

STUCK DOOR: DC 13 Strength check to force open. (DMG p. 103)

LOCKED DOOR: Without the proper key, door only opened by DC 12 Dexterity check (requiring thieves' tools and proficiency in their use), casting a Knock spell, or forcing the door with a successful DC 17 Strength check. (DMG p. 103)

SECRET DOOR: Passive Perception of DC 20 will notice a secret door without actively searching for it. An action to search a 5-foot section of wall finds the door with a successful DC 14 Wisdom (Perception) check. Finding the mechanism to open the door requires an additional action and successful DC 14 Intelligence (Investigation) check. (DMG p. 103)