Date: 12/31/1969 Views: 8032
Date: 12/20/2004 Views: 5411
Date: 05/07/2009 Views: 6116
Date: 08/23/2023 Views: 702767
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.