Our door frame trim is just less than 1/2 inch – it is 12mm on one side and an inch on the other. Would this be safe to use?

Hi Aimee, Thank you for your enquiry the Jolly Jumper has a  sturdy clamp for secure fit to interior doorways from 3 to 6 six inches thick with firmly affixed door trim at least 1/2 inch wide, this should be suitable for you, however, we would recommend talking to your local Baby On The Move team in regards to this. We hope this helps. ?For further information on this or any of our other products available, if you follow the link https://www.babyonthemove.co.nz/store-locations/ this will take you to our online store finder. Here you can find contact details for your nearest Baby On The Move Store where one of our team experts will be happy to assist you in your product search and help answer any further questions you may have. We hope this has helped with your query.