Building DIY camper, and need window and door recommendations

[GEONat]

Building a DIY camera has proven to be a ton of fun, but I would like to take a short cut with the windows and door. Can you suggest a durable set of windows and door that are sold 'rough'. Manufacture or retailers website will be great so I can look at options and different sizes if offered. Something that I can frame in myself. Thank you!

 

[Scott Macon]

Here you go: https://www.ternoverland.com/arctic-tern-window