Doors and hatches
Blue Iron Garage Door 3x2 (Powered)
Press & hold Activate to lock it or set a combination. Upgrade & repair with a construction tool using the secondary action.
Crafting
Craft at Workbench · makes 1
Crafted as 
Iron Garage Door 3x2 (Powered): pick this one of its variants when you place it.
Forged Iron× 20
Spring× 20
Mechanical Parts× 20
Electrical Parts× 20
Harvest drops
Iron× 100
Taken apart with a harvesting tool (axe, pickaxe, shovel), before perks and tool bonuses.
When it collapses
Falling, it leaves 
Scrap Metal Pile (75% of the time) where it lands.