I measured the kitchen drawers in our rockwood yesterday, and unfortunately the minimum depth for those cut-to-size inserts (17 3/4") is deeper than our drawers (15 3/4" deep, by 13 3/8" wide)
but it does look like I could use the wooden inserts, if I can cut them neatly.
(I don't have a table-saw, but perhaps could get one, or use a dremel, or a jigsaw with a fine blade)
2015 Rockwood Signature UltraLite 8281WS
2016 Ford F-250 Lariat CrewCab, 4x4, 6.2L V8