You can contact Rockwood/Flagstaff parts directly if you are going to install it yourself.
There is a Forest River contacts sheet in the site library under Miscellaneous documents. The contact names and email addresses might not be current but the phone number is (574) 642-2640.
2019 Rockwood Signature 8290BS, Reese Revolution pinbox and B&W Patriot 18K hitch
2016 Ford F-250 XLT SuperCrew, 6.2L, 4x4, 6'9" bed, 3.73, w/ snow plow & camper pkgs.
2011 Rockwood Signature 8293SS (2015 - 2018)
2010 Rockwood Roo 23SS (2012 - 2014)