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Old 02-01-2011, 09:15 AM   #1
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Hehr 8766 Vent Windows a Disaster

I cannot imagine a worse window design from an engineering standpoint.

Drawing this rectangular vent window closed by pulling on the upper fifth of the surface makes as much sense as placing a doorknob on the hinge side, designing a wheelbarrow with wheels and handles on the same end.

I'm winter camping at this moment, and snow is blowing into the bedroom even though the vent window cranks are as tight as they can get.

Age has little to do with this system: mine are only six years old.

I've temporarily stuffed with dirty laundry into the spaces until I can figure how to permanently seal them closed, render them useless as vents.

This product should be avoided, when purchasing a rig or replacing windows.


Top - The finished product, cold air and snow inflow minimized by stuffing dirty laundry in between windows and screens. How luxurious!

Middle - One window has 1/8" air gap when fully tightened.

Bottom - A vent window behind the bed has 1/4" of air gap when drawn as tight as the design allows.
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Old 02-01-2011, 11:50 AM   #2
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Does this problem present when the conditions outside are warmer?

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Old 02-02-2011, 08:51 AM   #3
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Had a awning window always stay open one corner when closed.
Found that the window would not recess into rubber seal probably since it was mounted on coach by Mfg.
Right now not much you can do in the cold weather.
To fix mine during the spring or preferably on hot summer day park coach so the sun will hit that side of coach.
Close window as tight as you can than go outside and push window into rubber gasket and let set for a few days closed. You may get the rubber seal to conform to window and allow window to close within the rubber seal.
I think I had to do a couple of times to get where window would snap into gasket and close with out a gap.
If window sticks to seal use some talcum power for lube on rubber.
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