I own crank out window...Can I hold a windowpane box?
Answers: Probably so!
Just keep surrounded by mind what kind of increase your plants may attain in relation to the bottom of the sashes.
First rotten you are so lucky to have crank out window! Love them! And yes you can have a porthole box. It would like great beside crank out window! I would start looking within home mags and find a box you like and budge from there. (if you enjoy not done that already.) :)