RV Awning+Annex all in one?

I think you are looking for hens teeth if you are looking for ready made units. The only full annexes in one piece I have seen are the old ones that mounted in sail tracks on the top of the van. They were all the go in the 60s & 70s. They tended to be very heavy even in the smaller units so in the 80s zip or clip on sides became the norm.

The last I have seen in the all in one style was the breeze way annex. I purchased it in 92. They were withdrawn from the catalogue about 5 years after that. You can make your own breeze way annex by purchasing an Oz Tent and attaching the flap to the top of your van.

Think you're probably a bit optimistic getting a 3 walls & roof compacted in one mounting.

Possibly talk to the guys at supapeg .... they have self contained no stay awnings with side walls ... pretty ewasy to set up and don't take up much space - the end wall can roll up in the rack mount.

A bit pricey, but good quality.

not sure if you are still looking came across this on ebay may be what you are after
look up item no 200824808236
Kev