Thank you for your inquiry regarding this item from Prime-Line Products. These of course were not designed to be used for that purpose, and doing so would void their warranty, but it sounds like it may work. You might also consider our Model # U 9275, Internet # 203032954. We also have smaller diameter door knob wall shields that may be of some use, like our Model # U 9243, Internet # 100209221, Store SKU # 316307. Please be advised that these adhesive backed door knob wall protectors were not designed to be used for your intended purpose, which will void the product warranty. Perhaps another idea that might work in a similar fashion is a 3/4 inch thick block of wood cut to the size and shape you need, then mounted with dual stick tape.
For additional questions regarding this item, or any other product manufactured by Prime-Line Products, please call their toll free number at (877) 649-9740, or contact them by email at email@example.com