Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: How does it attach to door?
Document: It was too large for my cabinet and there was not an alternative to attach it and I could not screw it into my metal cabinet doors.
this product was perfect for our needs. I mounted it at eye level on the inside of the pantry door.
Very useful. Attaches to the cabinet door to help keep my foil, and plastic wrap organized
This is a very cheap but effect door rack. Best hidden inside a closet because its very simple and flimsy in appearance.
Opened up 2 drawers. Spray painted them brown to match pantry door and very happy with how they turned out.
It worked fine; used it to assist in the organization and corralling the ends of vacuum hoses on a closet door.
fits my door great, now i have storage for al foil, wrap, and bags at my finger tips. can't beat it.
Works great. Love being able to free up a drawer and hang this on the inside of the cabinet door under the kitchen sink
The Door Wrap Rack is very basic, functional, cost effective, simple to install and exactly what I was looking for.
Sturdy, and a great size, perfect for our small space. attached to our pantry door , ended up buying two
Answer: By screws, which hook the wire shelf on its head.  Screws come in the package.