Date: 10/31/2007 Views: 8270
Date: 11/30/2013 Views: 8773
Date: 08/09/2009 Views: 6005
Date: 08/23/2023 Views: 803993
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.