Nothing is permanent.
Items are really sturdy, I have had no issue. Would buy again.
hi chica, as stated in the description and in two other places, the ultra storage latch box is 16.25" wide. you have everything right there to answer your own question! xxoo
Yes, the lid is clear.
That would depend on what you have inside them, and of course the space that you are stacking them. If contents are heavy, the box on the bottom will eventually have problems. If the box was empty (or contain very light contents), you could easily stack them as high as the space would allow.
Only you know the answer to that: What's your attic temp?...What temps can your items tolerate?
I didn't think it would so I bought these instead. They work great for 6+ taller trees, broken down, and even have more room to store lights. https://www.homedepot.com/p/Husky-45-Gal-Latch-and-Stack-Tote-with-Wheels-in-Black-206133/303099671
No film I’ve ever noticed and I have a lot of them in different sizes. I really like these containers.
Remember, they only state the shipping dimensions. The inner dimensions of the storage boxes are about 3" or 4" smaller, especially if it is a slanted side.