Posted by Franz [24.149.37.138] on Tuesday, December 01, 2015 at 02:31:52 :
In Reply to: Re: Defroster Vent Pictures posted by Willy-N [72.168.161.127] on Tuesday, December 01, 2015 at 01:47:26 :
Ancient rule of thumb applies to vacuum cleaners & defrosters. The nozzle area MUST not be bigger than the hose area unless you got a hurricane for a fan.
Fortunately Duct Tape will help you determine proper sizing.