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Old 02-12-2020, 03:13 PM   #1
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M.O.C. #22203
Adding an awning to a 343RL

I would like to add an awning (not slide topper) to the RH main slide. The shop I'm considering said he's done several, but needs the blueprint so as to positively locate the aluminum studs etc and ensure a solid install. I spoke with Keystone, and they will not provide the blueprint directly to me. The installer (not an RV dealer) is being kind enough to spend time on the phone to see if they will send the blueprints to him, although he was doubtful as he's not a dealer. According to Keystone, there is no publicly accessible online resource.

Does anyone happen to have said blueprint? This would be for the main slide on a 2014 343RL.

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Old 02-12-2020, 03:44 PM   #2
Alain L.
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M.O.C. #21390
I have a 2016 343RL without a second awning. I saw something about it a few weeks ago on the Montana Facebook group that if it does not have a second awning from the factory Montana said that there's is no backing in the wall to mount a second awning.
Ottawa Ontario
2018 Chevrolet 3500 HD CC SRW High Country
2016 Montana High Country 343RL
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Old 02-13-2020, 10:37 AM   #3
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M.O.C. #23433
I asked Keystone about adding an awning to our HC330RL and they said any modification would void the warranty. We are going with Magna Shades instead.

Troy and Tracy Chaddon
2019 Montana High Country 330RL
2005 Ford F-350 "Bulletproofed"
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Old 02-13-2020, 03:30 PM   #4
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M.O.C. #21057
On a cool damp morning you can see from the outside where the studs are located
2018 Montana High Country 331RL
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Old 02-14-2020, 06:16 AM   #5
Dave W
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M.O.C. #14547
On a 343RL you will need an aluminum stud finder; https://www.zircon.com/categories/metal-detectors/

Don't expect to find much in the way of studs as the side and slide walls construction is mostly a sandwich - 1/8" Filon outer skin/1" foam/ 5/32" interior wood. An awning rail will have screw holes about every 4 inches. By installing right at and under the drip rail, you will find some support that would normally be used for a topper. This may work . With the existing awning, there also is no place to bolt the forward arms between the door and main slide.

If you are considering adding that awning to the slide - there is no support structure to hold the awning rail

Adding a usual Dometic or Carefree awning above the 13 foot long main slide is kind of a waste as you really wont get much help shading anything as that slide goes out about 3 feet, leaving only - maybe - 3 feet effective.
Dave W
Traveling with my DW Susan, a couple poodlepups and our 2014 Montana High Country 343RL, being towed by a 6.7 2011 F250 CCLB using a B&W hitch and OEM puck system
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