Dorel Alexander "black metal futon assembly instructions" Questions

...black metal frame (assume that is the type you have, as mine is F 14000BLKS). The one I chose was Vermont Styloe Metal Arm Futon 3123098W, same type of frame I have. Under the Description, you will ...

...black futon model number ff400blks Here's what I did for that model. I Googled Dorel Futons. I found the one which resembled mine the closest, and mouse clicked on it. I got "Vermont Style Metal Arm ...