A: Hello Save Me - We're glad you asked! The overall dimensions of the smaller basket is 6 Inches (H) x 13.75 Inches (W) x 6 Inches (D) and larger basket is 6 Inches (H) x 17.75 Inches (W) x 6 Inches (D) so may not be wide enough to hold a roll of 100 trash bags, but may for a smaller roll. We hope this helps! - Sokim
A: Hello Martha - Thank you for asking about these storage baskets. They are not designed to be stacked on top of each other. Happy shopping! - Joe
A: Yes, mason jars fit, with extra room.
A: Yes. They have small silver screws underneath that can be re-moved so the wood handle could be removed.