#912 Circle Frame Back (or Round Frame Back) is 1/8" thick HDF wood on one side and painted white on the other and will fit inside the back rabbet as an image backing on all InLine Ovals Frames...
#912 Oval Frame Back is 1/8" thick HDF wood on one side and painted white on the other and will fit inside the back rabbet as an image backing on all InLine Ovals Frames.