Getting ready to protect part of your garden from frost to get the full harvest?
Try making a schedule 40
Grey PVC based pole set up (last for many years), using 90 degree sweeps to make the roofs, this is the SAFE and STRONG way to make the walls and the roof support, there is no tension built on it, which is why "Hoop" style greenhouse are dangerous, amazed that "experts" push this type of short lived hazard.
I have a couple of raised 4 feet wide by 25 long garden beds, with Bean and peas starting their blooming phase, since the average frost is only 3 weeks away, it means it will be very cool at night long before that happens, which would stunt the beans growth, therefore I will make a set up when completed, will be 3 feet tall, 4 feet wide. Will sink the 1 foot long 1" or 1 1/4" Grey schedule 40 PVC pipe into the ground OUTSIDE of the garden boards. to accommodate the 3/4" grey PVC pipe insertion.
Here is a photo of simple set up, but they make it dangerous and uses the wrong kind of PVC pipe,
it is for visual effect only, to show what it would look like having one set up using far better material, using sweeps to eliminate the built up tension of severely bending pipe, which is crazy thing to do.
No pipe cement is needed, just some duck tape instead, that way you can take the while thing down without cutting or breaking anything, cover the inground pope with end caps to keep dirt and water out.
Tee and 4 way tees connects pipes for the roofline and the walls between the "hoops" for strength and wind resistance, just push measured pipes and sweeps together, then some duck tape to prevent them from separating over time.