9x6 card envelopes

Helene e-mailed me for a measurement for an envelope for a card she's making. She's using the WRMK punch board. I came up with the following:

CARD SIZE               PAPER Size                    SCORE LINE
9x6 (flat)            =    11 5/8 x 11 5/8          =          6 7/8 (first score)
9x6 (Thick)        =          12 x 12                =           7 1/8 (first score)

Hope this would help everyone else.