Hi BobDiel,
We appreciate your question about a backguard that can be installed to prevent splashes to the wall.
We do have a compatible backguard that you can purchase. There are 2 variants, a 4-inch or a 9-inch high backguard. Please visit the Samsung link I have shared below. Once there, scroll to the part that shows "add finishing touches to your range"
https://www.samsung.com/us/home-appliances/ranges/electric/6-3-cu-ft-front-control-slide-in-electric-range-in-stainless-steel-ne63t8111ss-aa/#benefits
Should you need more assistance, please feel free to get back to us via the following options:
1. Facebook Messenger: http://m.me/samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us
When you message us, provide them this number 1144946000 and it will help our team pull up your information.
Leo