This duct tape or ‘duck tape’ might look metallic, but it’s not. It’s also something you should never use on duct work. Don’t put this stuff on an HVAC system. Instead of the cloth-back ...

duct tape? Immediately ... Instead, what you're seeing is speed tape, a flame-retardant aluminum adhesive specifically designed for the rigors of air travel. Read more: 10 Little-Known Car ...