Kits are about 10.00 dollars so I would say you might as well buy them at your dealer. Mine has maxi -air for 24.00.$ this is what you are talking about right?
The installation kit should have been with the cover. I suggest that you return them to Wal-Mart. I recently purchased one for my trailer at Wal-Mart and everything needed to install it along with the instructions on how to install it were in the box with the cover.
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George & Lynda
College Station, TX
2011 Cruiser CF335SS Patriot
'04 Dodge 2500 Quadcab CTD
The Wal-Mart covers I bought were made by Camco and do have all the required installation hardware included. Drilling of the vent's flange is required to affix the brackets. A very easy job that even I could do.
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Art and Karen
2013 Itasca Sunstar 35F, 2013 Ford C Max toad.
170 nights in 2013
132 in 2014