Tenoned Miter frame Stock size?

Hi all,

I want to try making the Tenoned Miter frame from the video Paul did a few years ago, but he does not reference what size stock to use.

I’m guessing he is using 3/4” stock based on the chisel size he used for making the Tenon Jig, but looking for some insight. Maybe it was just a simple oversight in the video, as he usually tells us what size stock he is using?

Thanks for the help, looking forward to mastering this and making many.

Pat