The template is in the Documents area under Trillium. Here is the link to it.
Fiberglass RV - Document Center - Trillium 1300 Cushion Template pattern
Just a reminder that this is best printed on 11x17, but two 8.5x11 pages might work if you print it borderless.
Another note with an issue I ran into. I did 5" cushions at the dinette and it worked out good. I had assumed that the front bench and bunk were 4", but it turns out that the bottom cushion now needs to be jammed under the bunk cushion that does not move. It kinda works, but 3" cushions would be much better.
Another thing I did was to cut the front bench cushion into two, to make it easier to lift to access underneath. Glad I did.