No Frame just the door.
Yes the hinge kit included a round type door knob.
Yes you can trim it easily to get the proper fit.
It is approximately 35-37 inches.
Yes with the optional kit. It is not included with the door.
It's very light weight. I don't think it would do well with a dog jumping on it.
The dimension of the square at the bottom is approximately 12" x 12".
If your opening is exactly 32 x 80 it will fit with proper clearance. If your opening is slightly larger or not square you may have issues
We didn’t put knobs we added handles on both sides and a hook for the inside of this screen door we added a rubber trim for a solid quiet closure and better fit! Love this door!
My handyman installed magnets on the door and a metal plate on the door jam. My situation is blocking my killer cat from bringing in live critters so it certainly isn't for security.