4" duct flange source?

I'm going to use a 4" sceet hose from my baffle to a firewall mounted oil cooler. I've been looking for a 4" duct flange, and haven't had any luck. Aircraft Spruce doesn't carry them.

Any suggestions?

Thanks!

Van's carries these. $17.00
http://www.vansaircraft.com/cgi-bin...15992-220-312&l=c&browse=&product=&action=add

9GT said:

Van's carries these. $17.00
http://www.vansaircraft.com/cgi-bin...15992-220-312&l=c&browse=&product=&action=add

Click to expand...

Geez...it was hiding in plane sight . Didn't even think to look there...
Thanks David!