MagneShade.com offers shade covers for the Seneca. They are pricier. Attach from the outside via magnets. I have a set in brown and looks good with the Hollywood paint. I tried to get Minion art on them but could not due to trademarks so I just have a plain set.
2015 Jayco Seneca 36 FK
2016 Jeep Wrangler Unlimited tow
2010 Tiffin RED 36 QSA - gone
2011 Monaco Monarch class A - gone