Rather than opening vertically (like gullwings) or horizontally forwards (scissor), a butterfly door features a lower and upper hinge operating on separate axes of rotation, meaning the door opens ...

In a nutshell, doors fit in one of the next categories: conventional, butterfly, suicide, gull-wing, scissor, sliding, and canopy doors. This story won’t be about how these door types came to be ...

Just add a Lamborghini-inspired vertical-opening door kit for $2,999 (or $4,300 installed). Vertical Doors Inc. is now offering a kit that includes said "butterfly" doors with hinges, all mounting ...