What lock is best for hollow metal doors? Victoria Kaverina December 02, 2019 15:04 Updated Follow The best option for the hollow door is Heavy duty Vizilok C6FS. Please, follow the links for more details.https://vizilok.com/collections/heavy-duty-lockshttps://vizilok.com/pages/cut-sheet-c6f Click HERE to go back to the order page. Related articles What is the Warranty Policy How to decide if I need Left or Right handed lock? What is an ADA lock? Are there currently physical stores where I can buy the locks? Which is the best lock to use for non-English speakers? Comments 0 comments Please sign in to leave a comment.