Date: 12/31/1969 Views: 6131
Date: 02/17/2009 Views: 6416
Date: 12/24/2007 Views: 16131
Date: 08/23/2023 Views: 795375
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.