Sofa Bed Air Mattress

[Chkysbak]

Ok, so I have removed the old spring mattress from the sofa bed, and have placed a 3" memory foam pad down and trimmed to size (48x72). I was wondering if anyone had any idea of where I could get an air mattress that is 48x72 (3/4 Full). I have searched almost everywhere but I don't want to spend $300 on an air mattress. I was just looking for a cheap one, that I could use as we don't use that bed much and it would just add a little more comfort. Of course if I can't find one, I will just go to Wal-mart and get a 5" memory foam and trim it down. Any Ideas?

[Frutza]

Don't remember the size, but Amazon.

[GulfStream1]

You can find air mattresses at many stores like Big K in the sports section, Amazon, Costco. But that is a air mattress pretty narrow. Is that for a one person to sleep??

[Chkysbak]

Measured the frame yesterday and it was 43" but I can fit a 45" wide mattress between the arms of the couch. So I think that the best option is a cut to fit foam pad. Planning a trip where my Daughter and her Fiance are going to be sleeping there.