A: You would be able to add windows on yourself, add on accessories are sold only as do it yourself they are not included with the shed installation.
A: The frame and the glass panels are all one unit and installed together.
A: Yes the window can be install later time
A: Very easy to install at any time. I built the shed and added 2 of them afterwards. One bit of advice, the templates were too big. If I had traced the templates without measuring and then cut the holes I would have been one angry shed builder. Measure the window and cut the right size hole
A: Yes. As you know, the only requirement to install a window is having a proper size opening in the wall where you can have a proper frame to secure the window. You can always cut a hole in the wall at a later time.
A: They do not come with locks, there are tabs to be held in when opening the window.
A: Unfortunately, add on accessories are sold only as do it yourself they are not included with the shed installation.
A: Hello Robin, Thank you for your recent inquiry with The Home Depot. Per the vendor this window can not be installed sideways and would void the warranty if installed sideways. We appreciate your business and look forward to serving you in the future.
A: The window measurement is 22"Wx30"H