That vent was made by the Hammond Vent Company which has been out of business for many years and not instlled on new RVs since then. There were a few aftermarket companies making theen but the market for them was low and the prices went up. Onu company made very strong fiber glass ones. All are difficult to find. I found a few tic and fiberglass ones plastic the surplus houses around Elkhart.

On the last three I needed for a 1978 GMC I ended up fiberglassing the original ones and reusing them. They were in very bad shape when I started and had cracks from the center to the edges that were spread to 1" wide at the edges. It was simply a monetary decision to repair vs. replace. Also because they are on top where no one see them, I decided the repaired one did not have to look perfect because no one ever sees them.

If you want to replace them I suggest you start by looking at Jim K's Applied GMC. He stocks a lot of hard to find stuff. If you do not find them on his web site then call and ask.

Should you update the vent/fan, I highly suggest the Max Fan as it has two
arms that control the vent. Fantastic has only one arm and the lid tends to
fatigue and break. Also they suggest not to travel with the lid open.
I know I travel with my vents wide open at times, I have Max Fan.

On Mon, Jun 15, 2020 at 7:55 AM 6cuda6--- via Gmclist <
gmclist@list.gmcnet.org> wrote:

> My goal is to actually replace the vents with a newer reversable fan
> models available today but like yourself, this is just a monetary stop gap
> till
> things globally improve. SO i may just try to "repair" what is there as
> i'm not restoring this coach to OEM but rebuilding it to make sure its all
> usable
>
> Ken Burton wrote on Mon, 15 June 2020 09:07
>> That vent was made by the Hammond Vent Company which has been out of
> business for many years and not instlled on new RVs since then. There were
> a
>> few aftermarket companies making theen but the market for them was low
> and the prices went up. Onu company made very strong fiber glass ones. All
>> are difficult to find. I found a few tic and fiberglass ones plastic
> the surplus houses around Elkhart.
>>
>> On the last three I needed for a 1978 GMC I ended up fiberglassing the
> original ones and reusing them. They were in very bad shape when I started
>> and had cracks from the center to the edges that were spread to 1" wide
> at the edges. It was simply a monetary decision to repair vs. replace.
>> Also because they are on top where no one see them, I decided the
> repaired one did not have to look perfect because no one ever sees them.
>>
>> If you want to replace them I suggest you start by looking at Jim K's
> Applied GMC. He stocks a lot of hard to find stuff. If you do not find
>> them on his web site then call and ask.
>
>
> --
> Rich Mondor,
>
> Brockville, ON
>
> 77 Hughes 2600
>
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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