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These NLS flapper doors were originally made of plastic. After several thousand open and closing cycles in the extreme hot and cold temperature blowing air, the plastic deterioration actually crumpled the original doors into pieces that sucked into the fan blower motor jamming it.
  These new doors fashioned from aluminium ride on bronze sleeve bearings. The new stainless steel axis pins will not corrode.   

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For added sound control, I sprayed the doors with a sound deadening thick polymer plastic coating. This added weight as well, because the doors close by gravity, and air pressure. A Velour-backed vinyl made a noiseless gasket that the doors slam and seal  against.

5/22/2013 07:19:17 pm

The car air conditioner should be regularly maintained.

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8/30/2013 01:13:57 am

Great site, was just reading and doing some work when I found this page

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