Absolutely.
Link:
https://formufit.com/blogs/news/pvc-auto-door-stand
As I said, I modified mine a bit to give it the taller mid-section. So the types and quantities of Formufit pieces was different than shown in the link.
I bought one pack of 4-way pieces (not two), substituting one pack of 5-way pieces for the bottom and middle connectors on the middle section. I also bought one pack of 2-way connectors for the top crossbar.
The measurement modifications I made were: 7" instead of 6.5" for the shortest PVC sections, and the middle risers were 18" just like the side risers.
Advice: I bought casters with bolts 3/8" diameter and 1" length. If you can find casters with longer bolts, you'll have less headache. Maybe even look at 1/2" bolts, they should fit in the end caps.
Assembly: After jamming one PVC piece into the Formufit connector and it not easily contacting the internal ledge where it would fully seat, I figured something slick would help assembly. (I didn't want to bang on the pieces with a mallet and mar them.) I grabbed whatever I had within reach out in the garage that wasn't liquid or too staining, in my case some Mink Oil. I slathered a bit on the PVC external ends and the connector internals and everything seated easily afterwards.