Hi Paul,
I believe one is plastic and the other is aluminum. Bought them
both and never installed the plastic ones. I used the Van's NACA ramp to
feed the 1" eye ball and it provides lots of air.
Jim
writes:
> <europa@pstewart.f2s.com>
>
> Anyone know what the difference is between the eyeball vents sold by
>
> aircraft spruce? They have two aliminium swivel vents one at $55.50
> (pn
> 05-00779) and the other at $172.95! (pn 13-03600). Unfortunately
> there
> is only a picture of the cheaper one on their web site.
>
> Regards
>
> Paul Stewart G-GIDY
>
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