metal doors

[MrTrololo]

very durable doors that would take more punishment before going down

they would appear in three variants

-full metal doors that nothing can see through them

-metal doors with window secured with iron bars,additionally character would be able to stab and shoot through them

-jail cell doors-i think everybody seen them in game

all variants would be craftable by character,only if he or she have proper skills,tools and materials

[MrHrulgin]

Metalwork already provides you with a number of metal door options that give you the transparent door you can attack through. It doesn't look like there's an opaque option, though.