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I did a write up on installing a Maxxair roof vent on the Sprinter-Source. May be of use to some use here. About to follow my own instructions.

http://sprinter-source.com/forum/showpost.php?p=129813&postcount=1
Good, I like the Maxxair for the same reasons as you. Expect to get to it in a few months. I had thought it was a post by you that I saw here, a month ago, where someone had mounted one in a Transit -- now, I don't know who, for future reference. That person had used none of the recommended sheet metal screws, and IIRC, held the fan in place with VHB tape. They built up the side channel depressions (with VHB? I didn't quite get that). The channels, I've been thinking, I could do with vinyl molding strips from Lowes, shaped as needed with saw or other power tools. If that person is reading this, or, if anyone knows who I have in mind, please say.
 

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EddieZ this site's search function works great, in the box to the right. Just enter Maxxair and you will probably find what you want.

PS was it Longboard who hired someone to do this installation?
 

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Good, I like the Maxxair for the same reasons as you. Expect to get to it in a few months. I had thought it was a post by you that I saw here, a month ago, where someone had mounted one in a Transit -- now, I don't know who, for future reference. That person had used none of the recommended sheet metal screws, and IIRC, held the fan in place with VHB tape. They built up the side channel depressions (with VHB? I didn't quite get that). The channels, I've been thinking, I could do with vinyl molding strips from Lowes, shaped as needed with saw or other power tools. If that person is reading this, or, if anyone knows who I have in mind, please say.
You are describing my post under Thaden DIY Camper. Reason side channel was built up using VHB rather than what you describe is that by the time I would put a shim between 2 layers of VHB, it would have been the same thickness as another layer of VHB so why not just use that other layer.
 

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You are describing my post under Thaden DIY Camper. Reason side channel was built up using VHB rather than what you describe is that by the time I would put a shim between 2 layers of VHB, it would have been the same thickness as another layer of VHB so why not just use that other layer.
Great, thanks. I will be referring to both of these threads, as my fan day grows near. I didn't realize the VHB was that thick.
 

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PS was it Longboard who hired someone to do this installation?
Yes it was I.
And when the "normal" profile mounts with the "normal" domed lids on my two Fantastic Fans made my Transit appear to be a motor home to many observers and the wind noise was crazy loud I ordered the flat lids and low profile mounting flange from the company and had the same experienced guy remove them and re-mount.
The fee sounded to good to be true, but he's been doing this since before he was old enough to drive and is now well into his sixties.
$35 per fan....roof cut, install, and wire!
I offered him $100 to pull them and install the new parts and re-mount, way quieter now and in the same FL town it was seen as a mega van and nothing more by everyone commenting.
A major reason for me NOT going with the MaxAir despite it's functional advantages was the non-stealthy look of it.
 

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And when the "normal" profile mounts with the "normal" domed lids on my two Fantastic Fans made my Transit appear to be a motor home to many observers and the wind noise was crazy loud I ordered the flat lids and low profile mounting flange from the company and had the same experienced guy remove them and re-mount.

A major reason for me NOT going with the MaxAir despite it's functional advantages was the non-stealthy look of it.
I haven't seen measurements, so, these are WAGs: The MaxxAir fan has a low-closed position, and a high-open position. It looks like it may be 4 inches tall when closed.

The permanent rain covers you see on some motor homes are 10 or 12 inches high.

How high are the normal domed lids, and low profile lids, if you recall?

--- EDIT ---

I finally found some exterior dimensions on the Maxxair site.

The Maxxfan deluxe is shown to be 5 inches tall when closed, and 9.3 inches tall when open.

A standard domed lid is shown to be 3 3/4 inches tall.

Elsewhere, I found that the old style, permanent rain cover is 9 inches tall.
 

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I haven't seen measurements, so, these are WAGs: The MaxxAir fan has a low-closed position, and a high-open position. It looks like it may be 4 inches tall when closed.

The permanent rain covers you see on some motor homes are 10 or 12 inches high.

How high are the normal domed lids, and low profile lids, if you recall?
I'll measure both this weekend, but the flat lid low profile mount is about an inch and a half closed. If you look hard you will see both lids in this photo.
 

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I'll measure both this weekend, but the flat lid low profile mount is about an inch and a half closed. If you look hard you will see both lids in this photo.
That's one way to keep the rain out. Just turn the van upside down. :D
 
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That's one way to keep the rain out. Just turn the van upside down. :D
I've given up on having my phone pics show right side up in this forum. No matter which way I shoot, they are always right side up on my phone and in my downloads on the laptop, but always upside down here. Clicking on it in this forum it then flips right side up.
Like I said, I've given up.
Hope you didn't strain your neck!
 

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Didn't realize that clicking on the attachment would open it up in its own window, right side up. That works . . . thanks.
 

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Here's a photo of my old Fantastic Fan low profile mount w/ flat lid from my Sprinter sitting next to the regular dome lid/normal profile Fantastic Fan. Both have the mounting flange sitting on the roof rack rail of my CRV. Quite a difference, especially since most of the extra height is white plastic, not very stealthy.
I flipped them upside down on a flat surface and measured from surface to flange.
5 1/2 inches for regular, 2" for low profile w/flat lid.

WOW! Right side up! And clicking on the image it REMAINS right side up!
Cool!
 

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Here's a photo of my old Fantastic Fan low profile mount w/ flat lid from my Sprinter sitting next to the regular dome lid/normal profile Fantastic Fan. Both have the mounting flange sitting on the roof rack rail of my CRV. Quite a difference, especially since most of the extra height is white plastic, not very stealthy.
I flipped them upside down on a flat surface and measured from surface to flange.
5 1/2 inches for regular, 2" for low profile w/flat lid.

WOW! Right side up! And clicking on the image it REMAINS right side up!
Cool!
Nice comparison pic, and, I appreciate the measurements. I can see people favoring the Maxxfan Deluxe, or the Fantastic low profile... but, I can not see any reason for anyone to favor the taller, domed, standard Fantastic Fan.

A few days ago, I had gone back to my earlier question about measurements, and edited it to include measures for 3 Maxxair products.
 

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Many people prefer the Fantastic product for a variety of reasons including unbelievable product and tech support. But most sold are high profile w/ domed lids. Indeed even Camping World does not stock or even order the low profile or flat lids! Most RVs have A/C units etc on the roof so they don't care, and prefer the greater interior height clearance as well as greater amount of light coming in through the dome. Sportsmobile is one of the few converters that realizes that class B's should be flat lid / low profile mount.
 

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Many people prefer the Fantastic product for a variety of reasons including unbelievable product and tech support. But most sold are high profile w/ domed lids. Indeed even Camping World does not stock or even order the low profile or flat lids! Most RVs have A/C units etc on the roof so they don't care, and prefer the greater interior height clearance as well as greater amount of light coming in through the dome. Sportsmobile is one of the few converters that realizes that class B's should be flat lid / low profile mount.
Aha! Now I get it. The motors and controls make depth that has to go somewhere, either above or below the roofline. In my case, I've got the medium roof Transit, so, I can not afford to use any more depth than will be taken by insulation and paneling (depth of crossbeam + 1/4 inch). I now see the depth of the low profile fan showing below the roof rack, in your pic. Looks like about 2 inches, and might fit flush with paneling. Does it?
 

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Aha! Now I get it. The motors and controls make depth that has to go somewhere, either above or below the roofline. In my case, I've got the medium roof Transit, so, I can not afford to use any more depth than will be taken by insulation and paneling (depth of crossbeam + 1/4 inch). I now see the depth of the low profile fan showing below the roof rack, in your pic. Looks like about 2 inches, and might fit flush with paneling. Does it?
Everything including the knob which is the lowest hanging piece of hardware will be around 2 inches lower inside with the low profile mounting base.
The domed lid vs flat does not alter that.
Glad you pointed out the motor etc in the pic......the low flat one from my Sprinter still has the fan unit installed, while the high domed one is just the shell....the real fan unit that came with it is currently installed in my Transit with a low profile mount and flat lid.
 

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Yes, height clearance inside can be an issue for some.
Mine is the high roof, I'm only 5'5", and I never wear shoes.
The high profile mount with domed lid was absurd for my situation, since 90% of my use is stealth camping and high speed Interstate driving.
I was told by three large resellers that the flat lids/low profile were no longer being manufactured, and was hesitant to put my old ones in the brand new Transit. Had I not been able to swap out the parts I would have sold them and put my old ones in.
The tall ones had CRAZY wind noise at 75 MPH, and passers by all asked me questions about my "motor home". Nobody has since I went low profile flat lid stealthy, and I hear no wind noise even at 85 MPH.
My chin-up bar is right under the forward fan, and my head is right under the fan's knob, which again is the lowest point. I can't hit it if I try!
 
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Everything including the knob which is the lowest hanging piece of hardware will be around 2 inches lower inside with the low profile mounting base.
Still not 100% clear. I get that the knob is the lowest part. I get that the hardware and housing sits lower with the low profile mount. BUT, with an insulated ceiling, does the bezel or housing sit flush against your ceiling paneling, and not eat up head room (except for the knob)?

I think that that IS the case.

And, I think the low profile mount in a bare sheet metal roof would stick down a couple of inches... while the standard mount would not stick down at all, except for the knob.

Just need to confirm my "understanding."
 
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