Only one row separates it from the single armored door, and that row is metal. Same five gears, same Level 3 bench, same research cost, plus a little more high quality metal for a frame that, as far as players can tell, holds no longer against explosives. The double door is the price of a wide doorway, not an upgrade.
The gears are where groups stall. Crafting all five yourself costs 500 scrap, several times the blueprint, so most doors in a wipe are built from gears pulled out of crates and the recycler. Give them a box of their own.
Tip
Have the armored door crafted before the sheet metal double door comes out. An empty wide frame is the softest spot in the wall.
Questions
Armored Double Door ×10: how many resources?
High Quality Metal ×250, Gears ×50.
Which workbench does Armored Double Door need?
Workbench level 3.
How long does Armored Double Door take to craft?
30 s for one, every step included.
How much scrap does researching Armored Double Door take?