My P-34 purchased in 2004 came with a Fairclough (New Haven, CT) cover & frame which needed replacement 2 years ago. They re-made a cover ($1800 methinks) from their records that fit just fine so perhaps they have made a 365 cover.
Great folks to deal with. Very prompt service, especially this time of year.
I am a big proponent of a canvas cover, cheaper & better in the long run.