lengthwise or crosswise/flat or upright/vertically or horizontally.

[hly2004]

Hi, everyone:

I'm replacing the door with a new one.
I use tool to take the door down from the door frame.
I lean it against the wall nearby.
To avoid that it will easily fall down, I places it horizontally/flat/crosswise against the wall.

Could you please tell me which one of the three word in red fits?

Best wishes

 

[Dimcl]

Hi, everyone:

I'm replacing the door with a new one.
I use tool to take the door down from the door frame.
I lean it against the wall nearby.
To avoid that it will easily fall down, I places it horizontally/flat/crosswise against the wall.

Could you please tell me which one of the three word in red fits?

Best wishes

"Flat" doesn't indicate which way the door has been turned so I wouldn't use it. I suppose that you could use "horizontally" or "crosswise", however, I think I'd be tempted to say "lengthwise" ie:

"I set the door on the floor lengthwise so that it wouldn't fall over"

 

[hly2004]

Thank you, Dimcl