Although the plexiglass and windows on this greenhouse are not as thick as others, they do offer protection from the elements.   It took 6 hours for one person to build it.   Please be aware that the manual comes from Israel so there is no text.   There are a few errors in the manual which are pretty obvious (parts presented backwards, etc.).  And of course a few random "extra parts" that were not used.  It will be interesting to see how the structure holds up to extreme cold/wind/snow load!