Exterior to Interior Rear Wall Thickness

[mbpayne74]

About to install a Furrion wireless observation camera/mount and wanted to check if anyone knows the thickness of the exterior wall to the interior along the backside of the trailer... I have a 2017 26BH (aluminum siding) and want to use plenty of screw but don't want to drill into the interior by accident... Any information is appreciated. Thanks.

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[BigJohnD]

Can't go wrong with an 1-1/2" screw. Walls are roughly 2" thick on a Jay Flight. Studs are 1-1/2". I had got a good measurement when I removed all 9 of my windows to do a reseal / reset last year. 1-1/2" stud, 1/8" interior panel, 1/8" luan plus filon on mine. So a little less than 2". Either way, 1-1/2" should be fine. If that's too close for you, go 1-3/8" or 1-1/4".

[mbpayne74]

Originally Posted by BigJohnD

Can't go wrong with an 1-1/2" screw. Walls are roughly 2" thick on a Jay Flight. Studs are 1-1/2". I had got a good measurement when I removed all 9 of my windows to do a reseal / reset last year. 1-1/2" stud, 1/8" interior panel, 1/8" luan plus filon on mine. So a little less than 2". Either way, 1-1/2" should be fine. If that's too close for you, go 1-3/8" or 1-1/4".

Thanks Big John... I will also have to look at where on the aluminum siding it needs to be mounted which could add some depth as well but I think your information will give me what I need to proceed.. Thanks again.

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[BigJohnD]

You're most certainly welcome. The main door opening will give you at least a good guess with a quick measurement. Better a shade short than too long. I have made that mistake in the past and ended up with screws through the wall. Luckily it was only a few and wasn't really noticeable.

[David Dave]

Thanks for this info guys I also have a 2022 Jayco 212QB SLX and I want to install a TV mount and I was wondering just what long of screw I needed. I don’t want to go all the way though the wall and make holes on the exterior wall of the trailer. So I am going to use the 1- 1/2”.