Atthecat, thanks, bro. So the 50 X 100 is the inside dimensions measured from cushion nose to cushion nose in both the length and the width. And the cushions themselves nor the surface under the cushions counts in the 50X100.
Then how is the 4 1/2 by 9 (54" x 108") measured? I think this is where the ghost cushion RKC was talking about comes in to play, but I don't get it because if you add the length of the cushions (2" for each rail) then you are adding 4" to each measurement which ends up being 54" X 104". What's up wit dat ghost cushion thingy?
If you have 2 cushions in your left hand, and you double them to your right hand, that's 4 cushions....right?



Glen