These flapper valves used for dryer vents might help.
tn_bbq Smoking Fanatic Jun 2, 2008 599 11 East Tennessee Jul 24, 2008 #21 These flapper valves used for dryer vents might help.
geek with fire Master of the Pit Original poster OTBS Member Thread starter Aug 5, 2007 1,089 17 Rural out-skirts of Sedalia, MO Jul 25, 2008 #22 Nice call! I'll take a look at that. Thanks.