4 ms·
Say wha? Hollow core steel doors are the industry standard fire rated door. You’ll find them in almost every commercial building in America.
by hyperbovine 6y ago
Say wha? Hollow core steel doors are the industry standard fire rated door. You’ll find them in almost every commercial building in America.
- Uberphallus 6y agoWhile what gp says is true, it's also true that doors usually don't touch anything other than the frame. It's a bit like that antijoke: What's white and hurts when it falls on you from a tree? A fridge.