Twiliger
Vent 2.jpg 

A problem solved? Air comes into the cab through a 10" X 2" vent in the cowl just under the front windshield. It can be turned on and off, but over the decades the insulation seal is not doing as it should. Because of the location of the AC blower in the trunk it is very difficult to access. I have been trying to come up with a way to block it off from the outside. Here is my solution using super strong magnets and a rubber matt material that will not damage the paint. I took her out for a spin and it worked. I'd say 99% of the air flow is gone. Just call me Macgyver.

Retired and enjoying doing squat.
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drikson
What a clever idea! Where did you get the magnets?
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Twiliger
Interesting answer to where I got the strong Magnets.  I worked for the State Lottery for 30 years and called on 167 retailers.  Grocery stores have these magnetic things that have a plastic piece with a long cord/string attached the magnet part would adhere to the metal frames around the ceiling panels or what ever they could use. They'd use these to  hang banners from the ceiling.  I had secured a few of these over the years. I just cut the plastic rod piece off of the actual magnets.   I put Chrome plastic License Plate Bolt covers over the Magnets too.
Retired and enjoying doing squat.
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