there was a mfg. called lift-o-matic don't know if they are still in business or not
had 2 sections , aluminum frame, with translucient panel on top was child proof, hydraulic operation you could raise one side acted as a wind break or when both sides were raised all the way up were sun canopy's great invention I will research & see what i can come up with, not cheap, that was in the 80's in Arizona
