Date: 07/19/2007 Views: 4425
Date: 09/18/2010 Views: 7405
Date: 05/19/2008 Views: 5193
Date: 08/23/2023 Views: 772270
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.