Date: 12/31/1969 Views: 4209
Date: 12/16/2006 Views: 5005
Date: 07/02/2009 Views: 4789
Date: 08/23/2023 Views: 705111
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.