Date: 12/31/1969 Views: 3997
Date: 09/22/2009 Views: 2882
Date: 11/18/2007 Views: 4888
Date: 08/23/2023 Views: 160009
Old 1/4 in (6.4 mm) vent on the top. Totally inadequate for the job. New 3/8 in (9.5 mm) vent on the bottom.