This green house looks good in my back yard. It takes one whole day to build 6X6 wooden base for this greenhouse. Then it takes one person more than 12 hours to assemble the greenhouse. The most differcult parts of this assemble are adjustments, and the nut screwdriver helps alot by quickly loosening and tightening the nuts. 

Pros: rain collection, easy assemble, and nut screwdriver
Cons: thin twin panels and easily bent aluminum base